Efficiently replace all accented characters in a string

Question

For a poor man s implementation of near-collation-correct sorting on the client side I need a JavaScript function that does efficient single character replacement in a string  Here is what I mean  note that this applies to German text  other languages sort differently    native sorting gets it wrong  a b c o u z          collation-correct would be    a    b c o    u    z  Basically  I need all occurrences of  quot    quot  of a given string replaced with  quot a quot   and so on   This way the result of native sorting would be very close to what a user would expect  or what a database would return   Other languages have facilities to do just that  Python supplies str translate    in Perl there is tr           XPath has a function translate    ColdFusion has ReplaceList    But what about JavaScript  Here is what I have right now     s would be a rather short string  something like     200 characters at max  most of the time much less  function makeSortString s      var translate          quot    quot    quot a quot    quot    quot    quot o quot    quot    quot    quot u quot        quot    quot    quot A quot    quot    quot    quot O quot    quot    quot    quot U quot       probably more to come        var translate re                   g    return   s replace translate re  function match         return translate match               For starters  I don t like the fact that the regex is rebuilt every time I call the function  I guess a closure can help in this regard  but I don t seem to get the hang of it for some reason  Can someone think of something more efficient   Answers below fall in two categories   String replacement functions of varying degrees of completeness and efficiency  what I was originally asking about  A late mention of  String localeCompare  which is now widely supported among JS engines  not so much at the time of the question  and could solve this category of problem much more elegantly

User · Answer

A simple and easy way   function remove-accents p   c                                                                                                s  aaaaaeeeeiiiiooooouuuucAAAAAEEEEIIIIOOOOOUUUUC  n    for i 0 i lt p length i    if c search p substr i 1   gt  0  n  s substr c search p substr i 1   1    else n  p substr i 1     return n      So do this   remove-accents  Th  s   s   n acc  nt  d phr  se      Output    This is an accented phrase

User · Answer

I ve solved it another way  if you like   Here I used two arrays where searchChars containing which will be replaced and replaceChars containing desired characters    x000D   x000D  var text    your input string   x000D  var searchChars                                  add more charecter  x000D  var replaceChars     A   A   a   O   o       exact same index to searchChars  x000D  var index  x000D  for  var i   0  i  lt  text length  i      x000D    if    inArray text i   searchChars   gt -1         inArray   is from jquery  x000D      index   searchChars indexOf text i    x000D      text   text slice 0  i    replaceChars index    text slice i 1 text length   x000D      x000D    x000D   x000D   x000D

User · Answer

I think this might work a little cleaner better  though I haven t test it s performance    String prototype stripAccents   function         var translate re                                                                                                             g      var translate    aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY       return  this replace translate re  function match           return translate substr translate re source indexOf match -1  1                  Or if you are still too worried about performance  let s get the best of both worlds   String prototype stripAccents   function         var in chrs                                                                                                                      out chrs    aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY            transl           eval  var chars rgx       in chrs    g        for var i   0  i  lt  in chrs length  i     transl in chrs charAt i     out chrs charAt i         return this replace chars rgx  function match           return transl match              EDIT  by  Tomalak   I appreciate the idea  However  there are several things wrong with the implementation  as outlined in the comment below   Here is how I would implement it   var stripAccents    function        var in chrs                                                                                                                     out chrs     aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY          chars rgx   new RegExp       in chrs         g          transl          i        lookup      function  m    return transl m     m        for  i 0  i lt in chrs length  i          transl  in chrs i      out chrs i          return function  s    return s replace chars rgx  lookup

User · Answer

Simply should be normalized chain and run a replacement codes   var str    Letras                   -                        console log  str normalize   NFKD   replace     u0300- u036F  g           Letras A E I O U N - a e i o u n      See normalize  Then you can use this function   function noTilde  s        if  s normalize    undefined            s   s normalize   NFKD              return s replace     u0300- u036F  g

User · Answer

For the lads using TypeScript and those who don t want to deal with string prototypes  here is a typescript version of Ed  s answer          Usage example       Some string  replace    a-zA-Z0-9-   g  char   gt  ToLatinMap get char                 Map      export let ToLatinMap  Map lt string  string gt    new Map lt string  string gt                    A              A    A                   A                   A                   A                   A                   A              A    A                    A                   A                   A                   A                   A                   A                    A              A    A                   A                   A                   A                   A                    A                   A                   A              A    A              A    A                    A                   A                   A                   A                    A                   AA                    AE                   AE                   AE                   AO                   AU                   AV                   AV                   AY                   B                   B                   B                   B                   B                   B              C    C              C    C                    C                   C              C    C              C    C                   C                   C              D    D                   D                   D                   D                   D                   D                   D                   D                   D                    D                   D                   DZ                   DZ                    E              E    E              E    E                   E                   E                    E                   E                   E                   E                   E                   E                   E                    E              E    E                   E                   E   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User · Answer

If you want to achieve sorting where      comes after  a  and is not treated as the same  then you can use a function like mine   You can always change the alphabet to get different or even weird sortings  However  if you want some letters to be equivalent  then you have to manipulate the strings like a   a replace        a   or similar  as many have already replied above  I ve included the uppercase letters if someone wants to have all uppercase words before all lowercase words  then you have to ommit  toLowerCase      function sortbyalphabet a b            alphabet    0123456789Aa                    BbCc    Dd                FfGgHh                JjKkLlMmNn    Oo                    PpQqRrSsTt                VvWwXx        Zz           a   a toLowerCase            b   b toLowerCase            shorterone    a length  gt  b length   a   b           for  i 0  i lt shorterone length  i                 diff   alphabet indexOf a charAt i   - alphabet indexOf b charAt i                if  diff  0                   return diff                                     sort the shorter first         return a length - b length            var n     ast      ste    apfel      pfel              console log n sort sortbyalphabet           should return   apfel    ast            pfel      ste

User · Answer

I can t speak to what you are trying to do specifically with the function itself  but if you don t like the regex being built every time  here are two solutions and some caveats about each   Here is one way to do this   function makeSortString s      if  makeSortString translate re  makeSortString translate re                   g    var translate                a          o          u              A          O          U       probably more to come        return   s replace makeSortString translate re  function match         return translate match                This will obviously make the regex a property of the function itself  The only thing you may not like about this  or you may  I guess it depends  is that the regex can now be modified outside of the function s body  So  someone could do this to modify the interally-used regex   makeSortString translate re     a-z  g    So  there is that option   One way to get a closure  and thus prevent someone from modifying the regex  would be to define this as an anonymous function assignment like this   var makeSortString    function       var translate re                   g    return function s        var translate                  a          o          u                A          O          U       probably more to come            return   s replace translate re  function match           return translate match                          Hopefully this is useful to you     UPDATE  It s early and I don t know why I didn t see the obvious before  but it might also be useful to put you translate object in a closure as well   var makeSortString    function       var translate re                   g    var translate                a          o          u              A          O          U       probably more to come        return function s        return   s replace translate re  function match           return translate match

User · Answer

Answer os Crisalin is almost perfect  Just improved the performance to avoid create new RegExp on each run   var normalizeConversions           regex  new RegExp             g    clean   ae           regex  new RegExp           g    clean   oe           regex  new RegExp        g    clean   ue           regex  new RegExp        g    clean   Ae           regex  new RegExp        g    clean   Ue           regex  new RegExp        g    clean   Oe           regex  new RegExp                      A A A A    g    clean   A           regex  new RegExp                   a a a a       g    clean   a           regex  new RegExp     C C C C    g    clean   C           regex  new RegExp     c c c c    g    clean   c           regex  new RegExp     D       g    clean   D           regex  new RegExp     d d    g    clean   d           regex  new RegExp              E E E E E    g    clean   E           regex  new RegExp              e e e e e    g    clean   e           regex  new RegExp  G G G G    g    clean   G           regex  new RegExp  g g g g    g    clean   g           regex  new RegExp  H H    g    clean   H           regex  new RegExp  h h    g    clean   h           regex  new RegExp              I I I I I I    g    clean   I           regex  new RegExp              i i i i i i    g    clean   i           regex  new RegExp  J    g    clean   J           regex  new RegExp  j    g    clean   j           regex  new RegExp  K    g    clean   K           regex  new RegExp  k    g    clean   k           regex  new RegExp  L L L   L    g    clean   L           regex  new RegExp  l l l   l    g    clean   l           regex  new RegExp     N N N    g    clean   N           regex  new RegExp     n n n      g    clean   n           regex  new RegExp              O O O O O         g    clean   O           regex  new RegExp              o o o o o            g    clean   o           regex  new RegExp  R R R    g    clean   R           regex  new RegExp  r r r    g    clean   r           regex  new RegExp  S S S       g    clean   S           regex  new RegExp  s s s         g    clean   s           regex  new RegExp  T T T    g    clean   T           regex  new RegExp  t t t    g    clean   t           regex  new RegExp           U U U U U U U U U U U U    g    clean   U           regex  new RegExp           u u u u u u u u u u u u    g    clean   u           regex  new RegExp        Y    g    clean   Y           regex  new RegExp        y    g    clean   y           regex  new RegExp  W    g    clean   W           regex  new RegExp  w    g    clean   w           regex  new RegExp  Z Z       g    clean   Z           regex  new RegExp  z z       g    clean   z           regex  new RegExp          g    clean   AE           regex  new RegExp        g    clean   ss           regex  new RegExp       g    clean   IJ           regex  new RegExp       g    clean   ij           regex  new RegExp        g    clean   OE           regex  new RegExp        g    clean   f         Usage   function str       normalizeConversions forEach function normalizeEntry           str   str replace normalizeEntry regex  normalizeEntry clean               return str

User · Answer

If you want to achieve sorting where      comes after  a  and is not treated as the same  then you can use a function like mine   You can always change the alphabet to get different or even weird sortings  However  if you want some letters to be equivalent  then you have to manipulate the strings like a   a replace        a   or similar  as many have already replied above  I ve included the uppercase letters if someone wants to have all uppercase words before all lowercase words  then you have to ommit  toLowerCase      function sortbyalphabet a b            alphabet    0123456789Aa                    BbCc    Dd                FfGgHh                JjKkLlMmNn    Oo                    PpQqRrSsTt                VvWwXx        Zz           a   a toLowerCase            b   b toLowerCase            shorterone    a length  gt  b length   a   b           for  i 0  i lt shorterone length  i                 diff   alphabet indexOf a charAt i   - alphabet indexOf b charAt i                if  diff  0                   return diff                                     sort the shorter first         return a length - b length            var n     ast      ste    apfel      pfel              console log n sort sortbyalphabet           should return   apfel    ast            pfel      ste

User · Answer

The complete solution to your request is   function convert accented characters str       var conversions   new Object        conversions  ae                    conversions  oe                  conversions  ue               conversions  Ae               conversions  Ue               conversions  Oe               conversions  A                          A A A A       conversions  a                       a a a a          conversions  C         C C C C       conversions  c         c c c c       conversions  D         D          conversions  d         d d       conversions  E                  E E E E E       conversions  e                  e e e e e       conversions  G      G G G G       conversions  g      g g g g       conversions  H      H H       conversions  h      h h       conversions  I                  I I I I I I       conversions  i                  i i i i i i       conversions  J      J       conversions  j      j       conversions  K      K       conversions  k      k       conversions  L      L L L   L       conversions  l      l l l   l       conversions  N         N N N       conversions  n         n n n         conversions  O                  O O O O O            conversions  o                  o o o o o               conversions  R      R R R       conversions  r      r r r       conversions  S      S S S          conversions  s      s s s            conversions  T      T T T       conversions  t      t t t       conversions  U               U U U U U U U U U U U U       conversions  u               u u u u u u u u u u u u       conversions  Y            Y       conversions  y            y       conversions  W      W       conversions  w      w       conversions  Z      Z Z          conversions  z      z z          conversions  AE                 conversions  ss               conversions  IJ              conversions  ij              conversions  OE               conversions  f               for var i in conversions           var re   new RegExp conversions i   g            str   str replace re i             return str

User · Answer

The correct terminology for such accents is Diacritics  After Googling this term  I found this function which is part of backbone paginator  It has a very complete collection of Diacritics and replaces them with their most intuitive ascii character  I found this to be the most complete Javascript solution available today   The full function for future reference   function removeDiacritics  str       var defaultDiacriticsRemovalMap           base   A    letters     u0041 u24B6 uFF21 u00C0 u00C1 u00C2 u1EA6 u1EA4 u1EAA u1EA8 u00C3 u0100 u0102 u1EB0 u1EAE u1EB4 u1EB2 u0226 u01E0 u00C4 u01DE u1EA2 u00C5 u01FA u01CD u0200 u0202 u1EA0 u1EAC u1EB6 u1E00 u0104 u023A u2C6F  g         base   AA   letters     uA732  g         base   AE   letters     u00C6 u01FC u01E2  g         base   AO   letters     uA734  g         base   AU   letters     uA736  g         base   AV   letters     uA738 uA73A  g         base   AY   letters     uA73C  g         base   B    letters     u0042 u24B7 uFF22 u1E02 u1E04 u1E06 u0243 u0182 u0181  g         base   C    letters     u0043 u24B8 uFF23 u0106 u0108 u010A u010C u00C7 u1E08 u0187 u023B uA73E  g         base   D    letters     u0044 u24B9 uFF24 u1E0A u010E u1E0C u1E10 u1E12 u1E0E u0110 u018B u018A u0189 uA779  g         base   DZ   letters     u01F1 u01C4  g         base   Dz   letters     u01F2 u01C5  g         base   E    letters     u0045 u24BA uFF25 u00C8 u00C9 u00CA u1EC0 u1EBE u1EC4 u1EC2 u1EBC u0112 u1E14 u1E16 u0114 u0116 u00CB u1EBA u011A u0204 u0206 u1EB8 u1EC6 u0228 u1E1C u0118 u1E18 u1E1A u0190 u018E  g         base   F    letters     u0046 u24BB uFF26 u1E1E u0191 uA77B  g         base   G    letters     u0047 u24BC uFF27 u01F4 u011C u1E20 u011E u0120 u01E6 u0122 u01E4 u0193 uA7A0 uA77D uA77E  g         base   H    letters     u0048 u24BD uFF28 u0124 u1E22 u1E26 u021E u1E24 u1E28 u1E2A u0126 u2C67 u2C75 uA78D  g         base   I    letters     u0049 u24BE uFF29 u00CC u00CD u00CE u0128 u012A u012C u0130 u00CF u1E2E u1EC8 u01CF u0208 u020A u1ECA u012E u1E2C u0197  g         base   J    letters     u004A u24BF uFF2A u0134 u0248  g         base   K    letters     u004B u24C0 uFF2B u1E30 u01E8 u1E32 u0136 u1E34 u0198 u2C69 uA740 uA742 uA744 uA7A2  g         base   L    letters     u004C u24C1 uFF2C u013F u0139 u013D u1E36 u1E38 u013B u1E3C u1E3A u0141 u023D u2C62 u2C60 uA748 uA746 uA780  g         base   LJ   letters     u01C7  g         base   Lj   letters     u01C8  g         base   M    letters     u004D u24C2 uFF2D u1E3E u1E40 u1E42 u2C6E u019C  g         base   N    letters     u004E u24C3 uFF2E u01F8 u0143 u00D1 u1E44 u0147 u1E46 u0145 u1E4A u1E48 u0220 u019D uA790 uA7A4  g         base   NJ   letters     u01CA  g         base   Nj   letters     u01CB  g         base   O    letters     u004F u24C4 uFF2F u00D2 u00D3 u00D4 u1ED2 u1ED0 u1ED6 u1ED4 u00D5 u1E4C u022C u1E4E u014C u1E50 u1E52 u014E u022E u0230 u00D6 u022A u1ECE u0150 u01D1 u020C u020E u01A0 u1EDC u1EDA u1EE0 u1EDE u1EE2 u1ECC u1ED8 u01EA u01EC u00D8 u01FE u0186 u019F uA74A uA74C  g         base   OI   letters     u01A2  g         base   OO   letters     uA74E  g         base   OU   letters     u0222  g         base   P    letters     u0050 u24C5 uFF30 u1E54 u1E56 u01A4 u2C63 uA750 uA752 uA754  g         base   Q    letters     u0051 u24C6 uFF31 uA756 uA758 u024A  g         base   R    letters     u0052 u24C7 uFF32 u0154 u1E58 u0158 u0210 u0212 u1E5A u1E5C u0156 u1E5E u024C u2C64 uA75A uA7A6 uA782  g         base   S    letters     u0053 u24C8 uFF33 u1E9E u015A u1E64 u015C u1E60 u0160 u1E66 u1E62 u1E68 u0218 u015E u2C7E uA7A8 uA784  g         base   T    letters     u0054 u24C9 uFF34 u1E6A u0164 u1E6C u021A u0162 u1E70 u1E6E u0166 u01AC u01AE u023E uA786  g         base   TZ   letters     uA728  g         base   U    letters     u0055 u24CA uFF35 u00D9 u00DA u00DB u0168 u1E78 u016A u1E7A u016C u00DC u01DB u01D7 u01D5 u01D9 u1EE6 u016E u0170 u01D3 u0214 u0216 u01AF u1EEA u1EE8 u1EEE u1EEC u1EF0 u1EE4 u1E72 u0172 u1E76 u1E74 u0244  g         base   V    letters     u0056 u24CB uFF36 u1E7C u1E7E u01B2 uA75E u0245  g         base   VY   letters     uA760  g         base   W    letters     u0057 u24CC uFF37 u1E80 u1E82 u0174 u1E86 u1E84 u1E88 u2C72  g         base   X    letters     u0058 u24CD uFF38 u1E8A u1E8C  g         base   Y    letters     u0059 u24CE uFF39 u1EF2 u00DD u0176 u1EF8 u0232 u1E8E u0178 u1EF6 u1EF4 u01B3 u024E u1EFE  g         base   Z    letters     u005A u24CF uFF3A u0179 u1E90 u017B u017D u1E92 u1E94 u01B5 u0224 u2C7F u2C6B uA762  g         base   a    letters     u0061 u24D0 uFF41 u1E9A u00E0 u00E1 u00E2 u1EA7 u1EA5 u1EAB u1EA9 u00E3 u0101 u0103 u1EB1 u1EAF u1EB5 u1EB3 u0227 u01E1 u00E4 u01DF u1EA3 u00E5 u01FB u01CE u0201 u0203 u1EA1 u1EAD u1EB7 u1E01 u0105 u2C65 u0250  g         base   aa   letters     uA733  g         base   ae   letters     u00E6 u01FD u01E3  g         base   ao   letters     uA735  g         base   au   letters     uA737  g         base   av   letters     uA739 uA73B  g         base   ay   letters     uA73D  g         base   b    letters     u0062 u24D1 uFF42 u1E03 u1E05 u1E07 u0180 u0183 u0253  g         base   c    letters     u0063 u24D2 uFF43 u0107 u0109 u010B u010D u00E7 u1E09 u0188 u023C uA73F u2184  g         base   d    letters     u0064 u24D3 uFF44 u1E0B u010F u1E0D u1E11 u1E13 u1E0F u0111 u018C u0256 u0257 uA77A  g         base   dz   letters     u01F3 u01C6  g         base   e    letters     u0065 u24D4 uFF45 u00E8 u00E9 u00EA u1EC1 u1EBF u1EC5 u1EC3 u1EBD u0113 u1E15 u1E17 u0115 u0117 u00EB u1EBB u011B u0205 u0207 u1EB9 u1EC7 u0229 u1E1D u0119 u1E19 u1E1B u0247 u025B u01DD  g         base   f    letters     u0066 u24D5 uFF46 u1E1F u0192 uA77C  g         base   g    letters     u0067 u24D6 uFF47 u01F5 u011D u1E21 u011F u0121 u01E7 u0123 u01E5 u0260 uA7A1 u1D79 uA77F  g         base   h    letters     u0068 u24D7 uFF48 u0125 u1E23 u1E27 u021F u1E25 u1E29 u1E2B u1E96 u0127 u2C68 u2C76 u0265  g         base   hv   letters     u0195  g         base   i    letters     u0069 u24D8 uFF49 u00EC u00ED u00EE u0129 u012B u012D u00EF u1E2F u1EC9 u01D0 u0209 u020B u1ECB u012F u1E2D u0268 u0131  g         base   j    letters     u006A u24D9 uFF4A u0135 u01F0 u0249  g         base   k    letters     u006B u24DA uFF4B u1E31 u01E9 u1E33 u0137 u1E35 u0199 u2C6A uA741 uA743 uA745 uA7A3  g         base   l    letters     u006C u24DB uFF4C u0140 u013A u013E u1E37 u1E39 u013C u1E3D u1E3B u017F u0142 u019A u026B u2C61 uA749 uA781 uA747  g         base   lj   letters     u01C9  g         base   m    letters     u006D u24DC uFF4D u1E3F u1E41 u1E43 u0271 u026F  g         base   n    letters     u006E u24DD uFF4E u01F9 u0144 u00F1 u1E45 u0148 u1E47 u0146 u1E4B u1E49 u019E u0272 u0149 uA791 uA7A5  g         base   nj   letters     u01CC  g         base   o    letters     u006F u24DE uFF4F u00F2 u00F3 u00F4 u1ED3 u1ED1 u1ED7 u1ED5 u00F5 u1E4D u022D u1E4F u014D u1E51 u1E53 u014F u022F u0231 u00F6 u022B u1ECF u0151 u01D2 u020D u020F u01A1 u1EDD u1EDB u1EE1 u1EDF u1EE3 u1ECD u1ED9 u01EB u01ED u00F8 u01FF u0254 uA74B uA74D u0275  g         base   oi   letters     u01A3  g         base   ou   letters     u0223  g         base   oo   letters     uA74F  g         base   p   letters     u0070 u24DF uFF50 u1E55 u1E57 u01A5 u1D7D uA751 uA753 uA755  g         base   q   letters     u0071 u24E0 uFF51 u024B uA757 uA759  g         base   r   letters     u0072 u24E1 uFF52 u0155 u1E59 u0159 u0211 u0213 u1E5B u1E5D u0157 u1E5F u024D u027D uA75B uA7A7 uA783  g         base   s   letters     u0073 u24E2 uFF53 u00DF u015B u1E65 u015D u1E61 u0161 u1E67 u1E63 u1E69 u0219 u015F u023F uA7A9 uA785 u1E9B  g         base   t   letters     u0074 u24E3 uFF54 u1E6B u1E97 u0165 u1E6D u021B u0163 u1E71 u1E6F u0167 u01AD u0288 u2C66 uA787  g         base   tz   letters     uA729  g         base   u   letters     u0075 u24E4 uFF55 u00F9 u00FA u00FB u0169 u1E79 u016B u1E7B u016D u00FC u01DC u01D8 u01D6 u01DA u1EE7 u016F u0171 u01D4 u0215 u0217 u01B0 u1EEB u1EE9 u1EEF u1EED u1EF1 u1EE5 u1E73 u0173 u1E77 u1E75 u0289  g         base   v   letters     u0076 u24E5 uFF56 u1E7D u1E7F u028B uA75F u028C  g         base   vy   letters     uA761  g         base   w   letters     u0077 u24E6 uFF57 u1E81 u1E83 u0175 u1E87 u1E85 u1E98 u1E89 u2C73  g         base   x   letters     u0078 u24E7 uFF58 u1E8B u1E8D  g         base   y   letters     u0079 u24E8 uFF59 u1EF3 u00FD u0177 u1EF9 u0233 u1E8F u00FF u1EF7 u1E99 u1EF5 u01B4 u024F u1EFF  g         base   z   letters     u007A u24E9 uFF5A u017A u1E91 u017C u017E u1E93 u1E95 u01B6 u0225 u0240 u2C6C uA763  g          for var i 0  i lt defaultDiacriticsRemovalMap length  i          str   str replace defaultDiacriticsRemovalMap i  letters  defaultDiacriticsRemovalMap i  base          return str

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Based on the solution by Jason Bunting  here is what I use now    The whole thing is for the jQuery tablesorter plug-in  For  nearly correct  sorting of non-English tables with tablesorter plugin it is necessary to make use of a custom textExtraction function    This one    translates the most common accented letters to unaccented ones  the list of supported letters is easily expandable  changes dates in German format   dd mm yyyy   to a recognized format   yyyy-mm-dd     Be careful to save the JavaScript file in UTF-8 encoding or it won t work      file encoding must be UTF-8  function getTextExtractor       return  function         var patternLetters                                                                     g      var patternDateDmy         D     d 1 2      d 1 2      d 2 4          var lookupLetters                  a          o          u                A          O          U                a          a          a                e          e          e                u          u          u                o          o          o                A          A          A                E          E          E                U          U          U                O          O          O                s             var letterTranslator   function match           return lookupLetters match     match             return function node          var text     trim   node  text           var date   text match patternDateDmy         if  date          return  date 3   date 2   date 1   join  -          else         return text replace patternLetters  letterTranslator                     You can use it like this      table sortable   tablesorter      textExtraction  getTextExtractor

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I made a Prototype Version of this   String prototype strip   function       var translate re                      g    var translate               a         o         u             A         O         U                      ss       probably more to come          return  this replace translate re  function match           return translate match                 Use like   var teststring                           teststring strip      This will will change the String to a o u A O U ss

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I just wanted to post my solution using String localeCompare   x000D   x000D  const base chars     x000D     1    2    3    4    5    6    7    8    9   x000D     0    a    b    c    d    e    f    g    h   x000D     i    j    k    l    m    n    o    p    q   x000D     r    s    t    u    v    w    x    y    z   x000D     -            x000D     x000D  const fix   str   gt  str normalize  NFKD   split     x000D       map c   gt  base chars find bc   gt  bc localeCompare c   en     sensitivity   base      0   x000D       join      x000D   x000D  const str    O         -123   x000D  console log  fix   str       fix str      x000D   x000D   x000D

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I can t think about an easier way to efficiently remove all diacritics from a string than using this amazing solution   See it in action    x000D   x000D  var string                   x000D   x000D  var string norm   string normalize  NFD   replace    u0300- u036f  g       x000D  console log string norm   x000D   x000D   x000D

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Long time ago I did this in Java and found someone else s solution based on a single string that captures part of the Unicode table that was important for the conversion - the rest was converted to   or any other replacement character  So I tried to convert it to JavaScript  Mind that I m no JS expert   -   TAB 00C0    AAAAAAACEEEEIIII         DNOOOOO OUUUUYIs         aaaaaaaceeeeiiii          nooooo ouuuuy y         AaAaAaCcCcCcCcDd         DdEeEeEeEeEeGgGg         GgGgHhHhIiIiIiIi         IiJjJjKkkLlLlLlL         lLlNnNnNnnNnOoOo         OoOoRrRrRrSsSsSs         SsTtTtTtUuUuUuUu         UuUuWwYyYZzZzZzF    function stripDiacritics source        var result   source split          for  var i   0  i  lt  result length  i              var c   source charCodeAt i           if  c  gt   0x00c0  amp  amp  c  lt   0x017f                result i    String fromCharCode TAB 00C0 charCodeAt c - 0x00c0              else if  c  gt  127                result i                             return result join         stripDiacritics    upa  co  l  tc          H       This converts most of latin1 2 Unicode characters  It is not able to translate single char to multiple  I don t know its performance on JS  in Java this is by far the fastest of common solutions  6-50x   there is no map  there is no regex  nothing  It produces strict ASCII output  potentially with a loss of information  but the size of the output matches the input   I tested the snippet with http   www webtoolkitonline com javascript-tester html and it produced Supa  co  lstczyaoa   as expected

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Simply should be normalized chain and run a replacement codes   var str    Letras                   -                        console log  str normalize   NFKD   replace     u0300- u036F  g           Letras A E I O U N - a e i o u n      See normalize  Then you can use this function   function noTilde  s        if  s normalize    undefined            s   s normalize   NFKD              return s replace     u0300- u036F  g

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I made a Prototype Version of this   String prototype strip   function       var translate re                      g    var translate               a         o         u             A         O         U                      ss       probably more to come          return  this replace translate re  function match           return translate match                 Use like   var teststring                           teststring strip      This will will change the String to a o u A O U ss

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A direct port to javascript of Kierons solution  https   github com rwarasaurus nano blob master system helpers php L61-73          Normalise a string replacing foreign characters        param  String  str     return  String  str      var normalize    function          var a                                                                                                                                                                                                                                                                                                                                                                       A    a    A    a    A    a    C    c    C    c    C    c    C    c    D    d          d    E    e    E    e    E    e    E    e    E    e    G    g    G    g    G    g    G    g    H    h    H    h    I    i    I    i    I    i    I    i    I    i              J    j    K    k    L    l    L    l    L    l              L    l    N    n    N    n    N    n         O    o    O    o    O    o                R    r    R    r    R    r    S    s    S    s    S    s                T    t    T    t    T    t    U    u    U    u    U    u    U    u    U    u    U    u    W    w    Y    y          Z    z    Z    z                           O    o    U    u    A    a    I    i    O    o    U    u    U    u    U    u    U    u    U    u                                      var b     A    A    A    A    A    A    AE    C    E    E    E    E    I    I    I    I    D    N    O    O    O    O    O    O    U    U    U    U    Y    s    a    a    a    a    a    a    ae    c    e    e    e    e    i    i    i    i    n    o    o    o    o    o    o    u    u    u    u    y    y    A    a    A    a    A    a    C    c    C    c    C    c    C    c    D    d    D    d    E    e    E    e    E    e    E    e    E    e    G    g    G    g    G    g    G    g    H    h    H    h    I    i    I    i    I    i    I    i    I    i    IJ    ij    J    j    K    k    L    l    L    l    L    l    L    l    l    l    N    n    N    n    N    n    n    O    o    O    o    O    o    OE    oe    R    r    R    r    R    r    S    s    S    s    S    s    S    s    T    t    T    t    T    t    U    u    U    u    U    u    U    u    U    u    U    u    W    w    Y    y    Y    Z    z    Z    z    Z    z    s    f    O    o    U    u    A    a    I    i    O    o    U    u    U    u    U    u    U    u    U    u    A    a    AE    ae    O    o         return function  str            var i   a length          while  i--  str   str replace a i   b i            return str                 And a slightly modified version  using a char-map instead of two arrays   To compare these two methods I made a simple benchmark  http   jsperf com replace-foreign-characters         Normalise a string replacing foreign characters        param  String  str     return  String      var normalize    function          var map                        A                      A                      A                      A                      A                      A                      AE                      C                      E                      E                      E                      E                      I                      I                      I                      I                      D                      N                      O                      O                      O                      O                      O                      O                      U                      U                      U                      U                      Y                      s                      a                      a                      a                      a                      a                      a                      ae                      c                      e                      e                      e                      e                      i                      i                      i                      i                      n                      o                      o                      o                      o                      o                      o                      u                      u                      u                      u                      y                      y                A    A                a    a                A    A                a    a                A    A                a    a                C    C                c    c                C    C                c    c                C    C                c    c                C    C                c    c                D    D                d    d                      D                d    d                E    E                e    e                E    E                e    e                E    E                e    e                E    E                e    e                E    E                e    e                G    G                g    g                G    G                g    g                G    G                g    g                G    G                g    g                H    H                h    h                H    H                h    h                I    I                i    i                I    I                i    i                I    I                i    i                I    I                i    i                I    I                i    i                     IJ                     ij                J    J                j    j                K    K                k    k                L    L                l    l                L    L                l    l                L    L                l    l                     L                     l                L    l                l    l                N    N                n    n                N    N                n    n                N    N                n    n                     n                O    O                o    o                O    O                o    o                O    O                o    o                      OE                      oe                R    R                r    r                R    R                r    r                R    R                r    r                S    S                s    s                S    S                s    s                S    S                s    s                      S                      s                T    T                t    t                T    T                t    t                T    T                t    t                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                W    W                w    w                Y    Y                y    y                      Y                Z    Z                z    z                Z    Z                z    z                      Z                      z                     s                      f                O    O                o    o                U    U                u    u                A    A                a    a                I    I                i    i                O    O                o    o                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                     A                     a                     AE                     ae                     O                     o                     nonWord     W g          mapping   function  c                return map c     c                    return function  str            return str replace nonWord  mapping

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If you re looking specifically for a way to convert accented characters to non-accented characters  rather than a way to sort accented characters  with a little finagling  the String localeCompare function can be manipulated to find the basic latin characters that match the extended ones   For example  you might want to produce a human friendly url slug from a page title   If so  you can do something like this    x000D   x000D  var baseChars       x000D  for  var i   97  i  lt  97   26  i      x000D    baseChars push String fromCharCode i    x000D    x000D   x000D    if needed  handle fancy compound characters x000D  baseChars   baseChars concat  ss aa ae ao au av ay dz hv lj nj oi ou oo tz vy  split        x000D   x000D  function isUpperCase c    return c     c toLocaleLowerCase     x000D   x000D  function toBaseChar c  opts    x000D    opts   opts        x000D      if     nonAlphaChar  in opts   opts nonAlphaChar       x000D      if     noMatchChar  in opts   opts noMatchChar       x000D    if     locale  in opts   opts locale    en   x000D   x000D    var cOpts    sensitivity   base    x000D   x000D      exit early for any non-alphabetical character x000D    if  c localeCompare  9   opts locale  cOpts   lt   0  return opts nonAlphaChar     undefined   c   opts nonAlphaChar  x000D   x000D    for  var i   0  i  lt  baseChars length  i      x000D      var baseChar   baseChars i   x000D   x000D      var comp   c localeCompare baseChar  opts locale  cOpts   x000D      if  comp    0  return  isUpperCase c     baseChar toUpperCase     baseChar  x000D      x000D   x000D    return opts noMatchChar     undefined   c   opts noMatchChar  x000D    x000D   x000D  function latinify str  opts    x000D    return str replace     w s d  g  function c    x000D      return toBaseChar c  opts   x000D       x000D    x000D   x000D     Example  x000D  console log latinify  Ce  tina Tsehesenestsestotse Tshiven a Emigli  n   Rumagn  l Sloven  cina Portugu  s Ti ng Vi t Stra  e    x000D   x000D      Cestina Tsehesenestsestotse Tshivenda Emiglian   Rumagnol Slovenscina Portugues Tieng Viet Strasse  x000D   x000D   x000D    This should perform quite well  but if further optimization were needed  a binary search could be used with localeCompare as the comparator to locate the base character   Note that case is preserved  and options allow for either preserving  replacing  or removing characters that aren t alphabetical  or do not have matching latin characters they can be replaced with   This implementation is faster and more flexible  and should work with new characters as they are added   The disadvantage is that compound characters like     have to be handled specifically  if they need to be supported

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If you re looking specifically for a way to convert accented characters to non-accented characters  rather than a way to sort accented characters  with a little finagling  the String localeCompare function can be manipulated to find the basic latin characters that match the extended ones   For example  you might want to produce a human friendly url slug from a page title   If so  you can do something like this    x000D   x000D  var baseChars       x000D  for  var i   97  i  lt  97   26  i      x000D    baseChars push String fromCharCode i    x000D    x000D   x000D    if needed  handle fancy compound characters x000D  baseChars   baseChars concat  ss aa ae ao au av ay dz hv lj nj oi ou oo tz vy  split        x000D   x000D  function isUpperCase c    return c     c toLocaleLowerCase     x000D   x000D  function toBaseChar c  opts    x000D    opts   opts        x000D      if     nonAlphaChar  in opts   opts nonAlphaChar       x000D      if     noMatchChar  in opts   opts noMatchChar       x000D    if     locale  in opts   opts locale    en   x000D   x000D    var cOpts    sensitivity   base    x000D   x000D      exit early for any non-alphabetical character x000D    if  c localeCompare  9   opts locale  cOpts   lt   0  return opts nonAlphaChar     undefined   c   opts nonAlphaChar  x000D   x000D    for  var i   0  i  lt  baseChars length  i      x000D      var baseChar   baseChars i   x000D   x000D      var comp   c localeCompare baseChar  opts locale  cOpts   x000D      if  comp    0  return  isUpperCase c     baseChar toUpperCase     baseChar  x000D      x000D   x000D    return opts noMatchChar     undefined   c   opts noMatchChar  x000D    x000D   x000D  function latinify str  opts    x000D    return str replace     w s d  g  function c    x000D      return toBaseChar c  opts   x000D       x000D    x000D   x000D     Example  x000D  console log latinify  Ce  tina Tsehesenestsestotse Tshiven a Emigli  n   Rumagn  l Sloven  cina Portugu  s Ti ng Vi t Stra  e    x000D   x000D      Cestina Tsehesenestsestotse Tshivenda Emiglian   Rumagnol Slovenscina Portugues Tieng Viet Strasse  x000D   x000D   x000D    This should perform quite well  but if further optimization were needed  a binary search could be used with localeCompare as the comparator to locate the base character   Note that case is preserved  and options allow for either preserving  replacing  or removing characters that aren t alphabetical  or do not have matching latin characters they can be replaced with   This implementation is faster and more flexible  and should work with new characters as they are added   The disadvantage is that compound characters like     have to be handled specifically  if they need to be supported

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https   stackoverflow com a 37511463     With ES2015 ES6 String Prototype Normalize     const str    Cr  me Brul  e  str normalize  NFD   replace    u0300- u036f  g       gt   Creme Brulee        Two things are happening here          normalize  ing to NFD Unicode normal form decomposes combined graphemes into the combination of simple ones  The    of Cr  me ends up expressed as e        Using a regex character class to match the U 0300   U 036F range  it is now trivial to globally get rid of the diacritics  which the Unicode standard conveniently groups as the Combining Diacritical Marks Unicode block          See comment for performance testing       Alternatively  if you just want sorting      Intl Collator has sufficient support  85  right now  a polyfill is also available here but I haven t tested it   const c   new Intl Collator      creme brulee    cr  me brul  e    crame brulai    crome brouill      creme brulay    creme brulf      creme brul  a   sort c compare     crame brulai   creme brulay   creme brul  a   creme brulee    cr  me brul  e   creme brulf     crome brouill          creme brulee    cr  me brul  e    crame brulai    crome brouill     sort  a b    gt  a gt b    crame brulai    creme brulee    crome brouill      cr  me brul  e

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Long time ago I did this in Java and found someone else s solution based on a single string that captures part of the Unicode table that was important for the conversion - the rest was converted to   or any other replacement character  So I tried to convert it to JavaScript  Mind that I m no JS expert   -   TAB 00C0    AAAAAAACEEEEIIII         DNOOOOO OUUUUYIs         aaaaaaaceeeeiiii          nooooo ouuuuy y         AaAaAaCcCcCcCcDd         DdEeEeEeEeEeGgGg         GgGgHhHhIiIiIiIi         IiJjJjKkkLlLlLlL         lLlNnNnNnnNnOoOo         OoOoRrRrRrSsSsSs         SsTtTtTtUuUuUuUu         UuUuWwYyYZzZzZzF    function stripDiacritics source        var result   source split          for  var i   0  i  lt  result length  i              var c   source charCodeAt i           if  c  gt   0x00c0  amp  amp  c  lt   0x017f                result i    String fromCharCode TAB 00C0 charCodeAt c - 0x00c0              else if  c  gt  127                result i                             return result join         stripDiacritics    upa  co  l  tc          H       This converts most of latin1 2 Unicode characters  It is not able to translate single char to multiple  I don t know its performance on JS  in Java this is by far the fastest of common solutions  6-50x   there is no map  there is no regex  nothing  It produces strict ASCII output  potentially with a loss of information  but the size of the output matches the input   I tested the snippet with http   www webtoolkitonline com javascript-tester html and it produced Supa  co  lstczyaoa   as expected

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Basing on existing answers and some suggestions  I ve created this one   String prototype removeAccents   function          var removalMap              A       A A            AA        A    A      A  g           AA         g           AE            g           AO         g           AU         g           AV          g           AY         g           B       B B        g           C       C CCCCC        g           D       D D D             g           DZ          g           Dz          g           E       E E           E  EE   E      E      g           F       F F      g           G       G G G GGGGG      g           H       H HH      H     g           I       I I      IIII    I   I I  g           J       J JJ   g           K       K K K K         g           L       L L LL  L  L        g           LJ         g           Lj         g           M       M M       g           N       N N N   N N        g           NJ         g           Nj         g           O       O O               O  O      OO  O       OO    O    g           OI         g           OO         g           OU         g           P       P P         g           Q       Q Q     g           R       R RR R    R        g           S       S S S S       S     g           T       T T T  T  T T    g           TZ         g           U       U U      U U U  UUUU UUU  U       U     g           V       V V       g           VY         g           W       W W  W      g           X       X X    g           Y       Y Y   Y            g           Z       Z ZZ Z           g           a       a a             aa        a    a      a    g           aa         g           ae            g           ao         g           au         g           av          g           ay         g           b       b b   b    g           c       c ccccc         g           d       d d d    d      g           dz          g           e       e e           e  ee   e      e       g           f       f f      g           g       g g g ggggg      g           h       h hh       h     g           hv         g           i       i i      iii    i   i  i  g           j       j jjj   g           k       k k k k         g           l       l l ll  l   ll       g           lj         g           m       m m       g           n       n n n   n n         g           nj         g           o       o o               o  o      oo  o       oo         g           oi         g           ou         g           oo         g           p       p p         g           q       q q     g           r       r rr r    r        g           s       s s  s s       s      g           t       t t  t  t  t      g           tz         g           u       u u      u u u  uuuu uuu  u       u     g           v       v v       g           vy         g           w       w w  w       g           x       x x    g           y       y y   y             g           z       z zz z    z      g              var str   this       for var latin in removalMap          var nonLatin   removalMap latin         str   str replace nonLatin   latin              return str      It uses real chars instead of unicode list and works well    You can use it like   aaa  removeAccents       returns  aaa    You can easily convert this function to not be string prototype  However  as I m fan of using string prototype in such cases  you ll have to do it yourself

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Here is a more complete version based on the Unicode standard  taken from here  http   semplicewebsites com removing-accents-javascript  var Latinise    Latinise latin map        A    A   A        A        A        A        A        A    A   A         A        A        A        A        A        A         A    A   A        A        A        A        A         A        A        A    A   A    A   A         A        A        A        A         A        AA         AE        AE        AE        AO        AU        AV        AV        AY        B        B        B        B        B        B    C   C    C   C         C        C    C   C    C   C        C        C    D   D        D        D        D        D        D        D        D        D         D        D        DZ        DZ         E    E   E    E   E        E        E         E        E        E        E        E        E        E         E    E   E        E        E         E        E        E    E   E        E        E    E   E        E        E        E        ET        F         F        G    G   G    G   G    G   G    G   G    G   G        G        G    G   G        H        H        H    H   H        H        H        H        H    H   H         I    I   I    I   I         I         I        I    I   I        I        I         I        I        I    I   I    I   I    I   I    I   I        I        D        F        G        R        S        T        IS    J   J        J        K    K   K    K   K        K        K        K        K        K        K        K    L   L        L    L   L    L   L        L        L        L        L        L        L        L        L        L    L   L        LJ        M        M        M        M    N   N    N   N    N   N        N        N        N        N        N        N        N        N         N        NJ         O    O   O    O   O         O        O        O        O        O        O         O        O        O        O        O    O   O        O         O        O    O   O        O        O        O        O        O        O        O        O    O   O        O        O    O   O    O   O    O   O         O        O         O        O        O        O        OI        OO        E        O        OU        P        P        P        P        P        P        P        Q        Q    R   R    R   R    R   R        R        R        R        R        R        R        R        R        C        E    S   S        S         S        S    S   S    S   S        S        S        S        S    T   T    T   T        T        T        T        T        T        T        T    T   T    T   T        A        L        M        V        TZ         U    U   U    U   U         U        U         U    U   U    U   U    U   U    U   U        U        U    U   U        U         U        U    U   U        U        U        U        U        U        U    U   U        U    U   U    U   U    U   U        U        U        V        V        V        V        VY        W    W   W        W        W        W        W        W        X        X         Y    Y   Y         Y        Y        Y        Y        Y        Y        Y        Y        Y        Y    Z   Z         Z        Z        Z    Z   Z        Z        Z        Z        Z        IJ         OE        A        AE        B        B        C        D        E        F        G        G        H        I        R        J        K        L        L        M        N        O        OE        O        OU        P        R        N        R        S        T        E        R        U        V        W        Y        Z         a    a   a        a        a        a        a        a    a   a         a        a        a        a        a        a         a    a   a        a        a        a        a         a        a        a    a   a    a   a        a        a         a        a        a        a         a        aa         ae        ae        ae        ao        au        av        av        ay        b        b        b        b        b        b    b   b        b        o    c   c    c   c         c        c    c   c        c    c   c        c        c    d   d        d        d        d        d        d        d        d        d        d        d    d   d        d        d    i   i        j        j        j        dz        dz         e    e   e    e   e        e        e         e        e        e        e        e        e        e         e    e   e        e        e         e        e        e    e   e        e        e        e    e   e        e        e        e        e        et        f         f        f        f        g    g   g    g   g    g   g    g   g    g   g        g        g        g    g   g        h        h        h    h   h        h        h        h        h        h        h    h   h        hv         i    i   i    i   i         i         i        i        i        i         i        i        i    i   i    i   i        i        i    i   i        i        d        f        g        r        s        t        is    j   j    j   j        j        j        k    k   k    k   k        k        k        k        k        k        k        k        k    l   l    l   l        l    l   l    l   l        l        l        l        l        l        l        l        l        l        l        l    l   l        lj        s        s        s        s        m        m        m        m        m        m    n   n    n   n    n   n        n        n        n        n        n        n        n        n        n        n        n         n        nj         o    o   o    o   o         o        o        o        o        o        o         o        o        o        o        o    o   o        o         o        o    o   o        o        o        o        o        o        o        o        o        o    o   o        o        o    o   o    o   o         o        o         o        o        o        o        oi        oo        e        e        o        o        ou        p        p        p        p        p        p        p        p        p        q        q        q        q    r   r    r   r    r   r        r        r        r        r        r        r        r        r        r        r        r        r        r        c        c        e        r    s   s        s         s        s    s   s    s   s        s        s        s        s        s        s        s        s    g   g        o        o        u    t   t    t   t        t        t        t        t        t        t        t        t        t        t    t   t        t    t   t        th        a        ae        e        g        h        h        h        i        k        l        m        m        oe        r        r        r        r        t        v        w        y        tz         u    u   u    u   u         u        u         u    u   u    u   u    u   u    u   u        u        u    u   u        u         u        u    u   u        u        u        u        u        u        u    u   u        u    u   u        u    u   u    u   u        u        u        ue        um        v        v        v        v        v        v        v        vy        w    w   w        w        w        w        w        w        w        x        x        x         y    y   y         y        y        y        y        y        y        y        y        y        y        y    z   z         z        z        z        z    z   z        z        z        z        z        z        z    z   z        z        ff        ffi        ffl        fi        fl        ij         oe        st        a        e        i        j        o        r        u        v        x    String prototype latinise function   return this replace    A-Za-z0-9       g function a  return Latinise latin map a   a     String prototype latinize String prototype latinise  String prototype isLatin function   return this  this latinise      Some examples    gt   Piqu    latinize     Pique   gt   Piqu    isLatin    false  gt   Pique  isLatin    true  gt   Piqu    latinise   isLatin    true

User · Answer

I can t speak to what you are trying to do specifically with the function itself  but if you don t like the regex being built every time  here are two solutions and some caveats about each   Here is one way to do this   function makeSortString s      if  makeSortString translate re  makeSortString translate re                   g    var translate                a          o          u              A          O          U       probably more to come        return   s replace makeSortString translate re  function match         return translate match                This will obviously make the regex a property of the function itself  The only thing you may not like about this  or you may  I guess it depends  is that the regex can now be modified outside of the function s body  So  someone could do this to modify the interally-used regex   makeSortString translate re     a-z  g    So  there is that option   One way to get a closure  and thus prevent someone from modifying the regex  would be to define this as an anonymous function assignment like this   var makeSortString    function       var translate re                   g    return function s        var translate                  a          o          u                A          O          U       probably more to come            return   s replace translate re  function match           return translate match                          Hopefully this is useful to you     UPDATE  It s early and I don t know why I didn t see the obvious before  but it might also be useful to put you translate object in a closure as well   var makeSortString    function       var translate re                   g    var translate                a          o          u              A          O          U       probably more to come        return function s        return   s replace translate re  function match           return translate match

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I just wanted to post my solution using String localeCompare   x000D   x000D  const base chars     x000D     1    2    3    4    5    6    7    8    9   x000D     0    a    b    c    d    e    f    g    h   x000D     i    j    k    l    m    n    o    p    q   x000D     r    s    t    u    v    w    x    y    z   x000D     -            x000D     x000D  const fix   str   gt  str normalize  NFKD   split     x000D       map c   gt  base chars find bc   gt  bc localeCompare c   en     sensitivity   base      0   x000D       join      x000D   x000D  const str    O         -123   x000D  console log  fix   str       fix str      x000D   x000D   x000D

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Basing on existing answers and some suggestions  I ve created this one   String prototype removeAccents   function          var removalMap              A       A A            AA        A    A      A  g           AA         g           AE            g           AO         g           AU         g           AV          g           AY         g           B       B B        g           C       C CCCCC        g           D       D D D             g           DZ          g           Dz          g           E       E E           E  EE   E      E      g           F       F F      g           G       G G G GGGGG      g           H       H HH      H     g           I       I I      IIII    I   I I  g           J       J JJ   g           K       K K K K         g           L       L L LL  L  L        g           LJ         g           Lj         g           M       M M       g           N       N N N   N N        g           NJ         g           Nj         g           O       O O               O  O      OO  O       OO    O    g           OI         g           OO         g           OU         g           P       P P         g           Q       Q Q     g           R       R RR R    R        g           S       S S S S       S     g           T       T T T  T  T T    g           TZ         g           U       U U      U U U  UUUU UUU  U       U     g           V       V V       g           VY         g           W       W W  W      g           X       X X    g           Y       Y Y   Y            g           Z       Z ZZ Z           g           a       a a             aa        a    a      a    g           aa         g           ae            g           ao         g           au         g           av          g           ay         g           b       b b   b    g           c       c ccccc         g           d       d d d    d      g           dz          g           e       e e           e  ee   e      e       g           f       f f      g           g       g g g ggggg      g           h       h hh       h     g           hv         g           i       i i      iii    i   i  i  g           j       j jjj   g           k       k k k k         g           l       l l ll  l   ll       g           lj         g           m       m m       g           n       n n n   n n         g           nj         g           o       o o               o  o      oo  o       oo         g           oi         g           ou         g           oo         g           p       p p         g           q       q q     g           r       r rr r    r        g           s       s s  s s       s      g           t       t t  t  t  t      g           tz         g           u       u u      u u u  uuuu uuu  u       u     g           v       v v       g           vy         g           w       w w  w       g           x       x x    g           y       y y   y             g           z       z zz z    z      g              var str   this       for var latin in removalMap          var nonLatin   removalMap latin         str   str replace nonLatin   latin              return str      It uses real chars instead of unicode list and works well    You can use it like   aaa  removeAccents       returns  aaa    You can easily convert this function to not be string prototype  However  as I m fan of using string prototype in such cases  you ll have to do it yourself

User · Answer

I can t speak to what you are trying to do specifically with the function itself  but if you don t like the regex being built every time  here are two solutions and some caveats about each   Here is one way to do this   function makeSortString s      if  makeSortString translate re  makeSortString translate re                   g    var translate                a          o          u              A          O          U       probably more to come        return   s replace makeSortString translate re  function match         return translate match                This will obviously make the regex a property of the function itself  The only thing you may not like about this  or you may  I guess it depends  is that the regex can now be modified outside of the function s body  So  someone could do this to modify the interally-used regex   makeSortString translate re     a-z  g    So  there is that option   One way to get a closure  and thus prevent someone from modifying the regex  would be to define this as an anonymous function assignment like this   var makeSortString    function       var translate re                   g    return function s        var translate                  a          o          u                A          O          U       probably more to come            return   s replace translate re  function match           return translate match                          Hopefully this is useful to you     UPDATE  It s early and I don t know why I didn t see the obvious before  but it might also be useful to put you translate object in a closure as well   var makeSortString    function       var translate re                   g    var translate                a          o          u              A          O          U       probably more to come        return function s        return   s replace translate re  function match           return translate match

User · Answer

Here is a more complete version based on the Unicode standard  taken from here  http   semplicewebsites com removing-accents-javascript  var Latinise    Latinise latin map        A    A   A        A        A        A        A        A    A   A         A        A        A        A        A        A         A    A   A        A        A        A        A         A        A        A    A   A    A   A         A        A        A        A         A        AA         AE        AE        AE        AO        AU        AV        AV        AY        B        B        B        B        B        B    C   C    C   C         C        C    C   C    C   C        C        C    D   D        D        D        D        D        D        D        D        D         D        D        DZ        DZ         E    E   E    E   E        E        E         E        E        E        E        E        E        E         E    E   E        E        E         E        E        E    E   E        E        E    E   E        E        E        E        ET        F         F        G    G   G    G   G    G   G    G   G    G   G        G        G    G   G        H        H        H    H   H        H        H        H        H    H   H         I    I   I    I   I         I         I        I    I   I        I        I         I        I        I    I   I    I   I    I   I    I   I        I        D        F        G        R        S        T        IS    J   J        J        K    K   K    K   K        K        K        K        K        K        K        K    L   L        L    L   L    L   L        L        L        L        L        L        L        L        L        L    L   L        LJ        M        M        M        M    N   N    N   N    N   N        N        N        N        N        N        N        N        N         N        NJ         O    O   O    O   O         O        O        O        O        O        O         O        O        O        O        O    O   O        O         O        O    O   O        O        O        O        O        O        O        O        O    O   O        O        O    O   O    O   O    O   O         O        O         O        O        O        O        OI        OO        E        O        OU        P        P        P        P        P        P        P        Q        Q    R   R    R   R    R   R        R        R        R        R        R        R        R        R        C        E    S   S        S         S        S    S   S    S   S        S        S        S        S    T   T    T   T        T        T        T        T        T        T        T    T   T    T   T        A        L        M        V        TZ         U    U   U    U   U         U        U         U    U   U    U   U    U   U    U   U        U        U    U   U        U         U        U    U   U        U        U        U        U        U        U    U   U        U    U   U    U   U    U   U        U        U        V        V        V        V        VY        W    W   W        W        W        W        W        W        X        X         Y    Y   Y         Y        Y        Y        Y        Y        Y        Y        Y        Y        Y    Z   Z         Z        Z        Z    Z   Z        Z        Z        Z        Z        IJ         OE        A        AE        B        B        C        D        E        F        G        G        H        I        R        J        K        L        L        M        N        O        OE        O        OU        P        R        N        R        S        T        E        R        U        V        W        Y        Z         a    a   a        a        a        a        a        a    a   a         a        a        a        a        a        a         a    a   a        a        a        a        a         a        a        a    a   a    a   a        a        a         a        a        a        a         a        aa         ae        ae        ae        ao        au        av        av        ay        b        b        b        b        b        b    b   b        b        o    c   c    c   c         c        c    c   c        c    c   c        c        c    d   d        d        d        d        d        d        d        d        d        d        d    d   d        d        d    i   i        j        j        j        dz        dz         e    e   e    e   e        e        e         e        e        e        e        e        e        e         e    e   e        e        e         e        e        e    e   e        e        e        e    e   e        e        e        e        e        et        f         f        f        f        g    g   g    g   g    g   g    g   g    g   g        g        g        g    g   g        h        h        h    h   h        h        h        h        h        h        h    h   h        hv         i    i   i    i   i         i         i        i        i        i         i        i        i    i   i    i   i        i        i    i   i        i   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     u        u        u        u    u   u        u    u   u        u    u   u    u   u        u        u        ue        um        v        v        v        v        v        v        v        vy        w    w   w        w        w        w        w        w        w        x        x        x         y    y   y         y        y        y        y        y        y        y        y        y        y        y    z   z         z        z        z        z    z   z        z        z        z        z        z        z    z   z        z        ff        ffi        ffl        fi        fl        ij         oe        st        a        e        i        j        o        r        u        v        x    String prototype latinise function   return this replace    A-Za-z0-9       g function a  return Latinise latin map a   a     String prototype latinize String prototype latinise  String prototype isLatin function   return this  this latinise      Some examples    gt   Piqu    latinize     Pique   gt   Piqu    isLatin    false  gt   Pique  isLatin    true  gt   Piqu    latinise   isLatin    true

User · Answer

I ve solved it another way  if you like   Here I used two arrays where searchChars containing which will be replaced and replaceChars containing desired characters    x000D   x000D  var text    your input string   x000D  var searchChars                                  add more charecter  x000D  var replaceChars     A   A   a   O   o       exact same index to searchChars  x000D  var index  x000D  for  var i   0  i  lt  text length  i      x000D    if    inArray text i   searchChars   gt -1         inArray   is from jquery  x000D      index   searchChars indexOf text i    x000D      text   text slice 0  i    replaceChars index    text slice i 1 text length   x000D      x000D    x000D   x000D   x000D

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Answer os Crisalin is almost perfect  Just improved the performance to avoid create new RegExp on each run   var normalizeConversions           regex  new RegExp             g    clean   ae           regex  new RegExp           g    clean   oe           regex  new RegExp        g    clean   ue           regex  new RegExp        g    clean   Ae           regex  new RegExp        g    clean   Ue           regex  new RegExp        g    clean   Oe           regex  new RegExp                      A A A A    g    clean   A           regex  new RegExp                   a a a a       g    clean   a           regex  new RegExp     C C C C    g    clean   C           regex  new RegExp     c c c c    g    clean   c           regex  new RegExp     D       g    clean   D           regex  new RegExp     d d    g    clean   d           regex  new RegExp              E E E E E    g    clean   E           regex  new RegExp              e e e e e    g    clean   e           regex  new RegExp  G G G G    g    clean   G           regex  new RegExp  g g g g    g    clean   g           regex  new RegExp  H H    g    clean   H           regex  new RegExp  h h    g    clean   h           regex  new RegExp              I I I I I I    g    clean   I           regex  new RegExp              i i i i i i    g    clean   i           regex  new RegExp  J    g    clean   J           regex  new RegExp  j    g    clean   j           regex  new RegExp  K    g    clean   K           regex  new RegExp  k    g    clean   k           regex  new RegExp  L L L   L    g    clean   L           regex  new RegExp  l l l   l    g    clean   l           regex  new RegExp     N N N    g    clean   N           regex  new RegExp     n n n      g    clean   n           regex  new RegExp              O O O O O         g    clean   O           regex  new RegExp              o o o o o            g    clean   o           regex  new RegExp  R R R    g    clean   R           regex  new RegExp  r r r    g    clean   r           regex  new RegExp  S S S       g    clean   S           regex  new RegExp  s s s         g    clean   s           regex  new RegExp  T T T    g    clean   T           regex  new RegExp  t t t    g    clean   t           regex  new RegExp           U U U U U U U U U U U U    g    clean   U           regex  new RegExp           u u u u u u u u u u u u    g    clean   u           regex  new RegExp        Y    g    clean   Y           regex  new RegExp        y    g    clean   y           regex  new RegExp  W    g    clean   W           regex  new RegExp  w    g    clean   w           regex  new RegExp  Z Z       g    clean   Z           regex  new RegExp  z z       g    clean   z           regex  new RegExp          g    clean   AE           regex  new RegExp        g    clean   ss           regex  new RegExp       g    clean   IJ           regex  new RegExp       g    clean   ij           regex  new RegExp        g    clean   OE           regex  new RegExp        g    clean   f         Usage   function str       normalizeConversions forEach function normalizeEntry           str   str replace normalizeEntry regex  normalizeEntry clean               return str

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A simple and easy way   function remove-accents p   c                                                                                                s  aaaaaeeeeiiiiooooouuuucAAAAAEEEEIIIIOOOOOUUUUC  n    for i 0 i lt p length i    if c search p substr i 1   gt  0  n  s substr c search p substr i 1   1    else n  p substr i 1     return n      So do this   remove-accents  Th  s   s   n acc  nt  d phr  se      Output    This is an accented phrase

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The complete solution to your request is   function convert accented characters str       var conversions   new Object        conversions  ae                    conversions  oe                  conversions  ue               conversions  Ae               conversions  Ue               conversions  Oe               conversions  A                          A A A A       conversions  a                       a a a a          conversions  C         C C C C       conversions  c         c c c c       conversions  D         D          conversions  d         d d       conversions  E                  E E E E E       conversions  e                  e e e e e       conversions  G      G G G G       conversions  g      g g g g       conversions  H      H H       conversions  h      h h       conversions  I                  I I I I I I       conversions  i                  i i i i i i       conversions  J      J       conversions  j      j       conversions  K      K       conversions  k      k       conversions  L      L L L   L       conversions  l      l l l   l       conversions  N         N N N       conversions  n         n n n         conversions  O                  O O O O O            conversions  o                  o o o o o               conversions  R      R R R       conversions  r      r r r       conversions  S      S S S          conversions  s      s s s            conversions  T      T T T       conversions  t      t t t       conversions  U               U U U U U U U U U U U U       conversions  u               u u u u u u u u u u u u       conversions  Y            Y       conversions  y            y       conversions  W      W       conversions  w      w       conversions  Z      Z Z          conversions  z      z z          conversions  AE                 conversions  ss               conversions  IJ              conversions  ij              conversions  OE               conversions  f               for var i in conversions           var re   new RegExp conversions i   g            str   str replace re i             return str

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Not a single answer mentions String localeCompare  which happens to do exactly what you originally wanted  but not what you re asking for   var list     a    b    c    o    u    z                       list sort  a  b    gt  a localeCompare b     console log list      Outputs   a          b    c    o          u          z     The second and third parameter are not supported by older browsers though  It s an option worth considering nonetheless

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The correct terminology for such accents is Diacritics  After Googling this term  I found this function which is part of backbone paginator  It has a very complete collection of Diacritics and replaces them with their most intuitive ascii character  I found this to be the most complete Javascript solution available today   The full function for future reference   function removeDiacritics  str       var defaultDiacriticsRemovalMap           base   A    letters     u0041 u24B6 uFF21 u00C0 u00C1 u00C2 u1EA6 u1EA4 u1EAA u1EA8 u00C3 u0100 u0102 u1EB0 u1EAE u1EB4 u1EB2 u0226 u01E0 u00C4 u01DE u1EA2 u00C5 u01FA u01CD u0200 u0202 u1EA0 u1EAC u1EB6 u1E00 u0104 u023A u2C6F  g         base   AA   letters     uA732  g         base   AE   letters     u00C6 u01FC u01E2  g         base   AO   letters     uA734  g         base   AU   letters     uA736  g         base   AV   letters     uA738 uA73A  g         base   AY   letters     uA73C  g         base   B    letters     u0042 u24B7 uFF22 u1E02 u1E04 u1E06 u0243 u0182 u0181  g         base   C    letters     u0043 u24B8 uFF23 u0106 u0108 u010A u010C u00C7 u1E08 u0187 u023B uA73E  g         base   D    letters     u0044 u24B9 uFF24 u1E0A u010E u1E0C u1E10 u1E12 u1E0E u0110 u018B u018A u0189 uA779  g         base   DZ   letters     u01F1 u01C4  g         base   Dz   letters     u01F2 u01C5  g         base   E    letters     u0045 u24BA uFF25 u00C8 u00C9 u00CA u1EC0 u1EBE u1EC4 u1EC2 u1EBC u0112 u1E14 u1E16 u0114 u0116 u00CB u1EBA u011A u0204 u0206 u1EB8 u1EC6 u0228 u1E1C u0118 u1E18 u1E1A u0190 u018E  g         base   F    letters     u0046 u24BB uFF26 u1E1E u0191 uA77B  g         base   G    letters     u0047 u24BC uFF27 u01F4 u011C u1E20 u011E u0120 u01E6 u0122 u01E4 u0193 uA7A0 uA77D uA77E  g         base   H    letters     u0048 u24BD uFF28 u0124 u1E22 u1E26 u021E u1E24 u1E28 u1E2A u0126 u2C67 u2C75 uA78D  g         base   I    letters     u0049 u24BE uFF29 u00CC u00CD u00CE u0128 u012A u012C u0130 u00CF u1E2E u1EC8 u01CF u0208 u020A u1ECA u012E u1E2C u0197  g         base   J    letters     u004A u24BF uFF2A u0134 u0248  g         base   K    letters     u004B u24C0 uFF2B u1E30 u01E8 u1E32 u0136 u1E34 u0198 u2C69 uA740 uA742 uA744 uA7A2  g         base   L    letters     u004C u24C1 uFF2C u013F u0139 u013D u1E36 u1E38 u013B u1E3C u1E3A u0141 u023D u2C62 u2C60 uA748 uA746 uA780  g         base   LJ   letters     u01C7  g         base   Lj   letters     u01C8  g         base   M    letters     u004D u24C2 uFF2D u1E3E u1E40 u1E42 u2C6E u019C  g         base   N    letters     u004E u24C3 uFF2E u01F8 u0143 u00D1 u1E44 u0147 u1E46 u0145 u1E4A u1E48 u0220 u019D uA790 uA7A4  g         base   NJ   letters     u01CA  g         base   Nj   letters     u01CB  g         base   O    letters     u004F u24C4 uFF2F u00D2 u00D3 u00D4 u1ED2 u1ED0 u1ED6 u1ED4 u00D5 u1E4C u022C u1E4E u014C u1E50 u1E52 u014E u022E u0230 u00D6 u022A u1ECE u0150 u01D1 u020C u020E u01A0 u1EDC u1EDA u1EE0 u1EDE u1EE2 u1ECC u1ED8 u01EA u01EC u00D8 u01FE u0186 u019F uA74A uA74C  g         base   OI   letters     u01A2  g         base   OO   letters     uA74E  g         base   OU   letters     u0222  g         base   P    letters     u0050 u24C5 uFF30 u1E54 u1E56 u01A4 u2C63 uA750 uA752 uA754  g         base   Q    letters     u0051 u24C6 uFF31 uA756 uA758 u024A  g         base   R    letters     u0052 u24C7 uFF32 u0154 u1E58 u0158 u0210 u0212 u1E5A u1E5C u0156 u1E5E u024C u2C64 uA75A uA7A6 uA782  g         base   S    letters     u0053 u24C8 uFF33 u1E9E u015A u1E64 u015C u1E60 u0160 u1E66 u1E62 u1E68 u0218 u015E u2C7E uA7A8 uA784  g         base   T    letters     u0054 u24C9 uFF34 u1E6A u0164 u1E6C u021A u0162 u1E70 u1E6E u0166 u01AC u01AE u023E uA786  g         base   TZ   letters     uA728  g         base   U    letters     u0055 u24CA uFF35 u00D9 u00DA u00DB u0168 u1E78 u016A u1E7A u016C u00DC u01DB u01D7 u01D5 u01D9 u1EE6 u016E u0170 u01D3 u0214 u0216 u01AF u1EEA u1EE8 u1EEE u1EEC u1EF0 u1EE4 u1E72 u0172 u1E76 u1E74 u0244  g         base   V    letters     u0056 u24CB uFF36 u1E7C u1E7E u01B2 uA75E u0245  g         base   VY   letters     uA760  g         base   W    letters     u0057 u24CC uFF37 u1E80 u1E82 u0174 u1E86 u1E84 u1E88 u2C72  g         base   X    letters     u0058 u24CD uFF38 u1E8A u1E8C  g         base   Y    letters     u0059 u24CE uFF39 u1EF2 u00DD u0176 u1EF8 u0232 u1E8E u0178 u1EF6 u1EF4 u01B3 u024E u1EFE  g         base   Z    letters     u005A u24CF uFF3A u0179 u1E90 u017B u017D u1E92 u1E94 u01B5 u0224 u2C7F u2C6B uA762  g         base   a    letters     u0061 u24D0 uFF41 u1E9A u00E0 u00E1 u00E2 u1EA7 u1EA5 u1EAB u1EA9 u00E3 u0101 u0103 u1EB1 u1EAF u1EB5 u1EB3 u0227 u01E1 u00E4 u01DF u1EA3 u00E5 u01FB u01CE u0201 u0203 u1EA1 u1EAD u1EB7 u1E01 u0105 u2C65 u0250  g         base   aa   letters     uA733  g         base   ae   letters     u00E6 u01FD u01E3  g         base   ao   letters     uA735  g         base   au   letters     uA737  g         base   av   letters     uA739 uA73B  g         base   ay   letters     uA73D  g         base   b    letters     u0062 u24D1 uFF42 u1E03 u1E05 u1E07 u0180 u0183 u0253  g         base   c    letters     u0063 u24D2 uFF43 u0107 u0109 u010B u010D u00E7 u1E09 u0188 u023C uA73F u2184  g         base   d    letters     u0064 u24D3 uFF44 u1E0B u010F u1E0D u1E11 u1E13 u1E0F u0111 u018C u0256 u0257 uA77A  g         base   dz   letters     u01F3 u01C6  g         base   e    letters     u0065 u24D4 uFF45 u00E8 u00E9 u00EA u1EC1 u1EBF u1EC5 u1EC3 u1EBD u0113 u1E15 u1E17 u0115 u0117 u00EB u1EBB u011B u0205 u0207 u1EB9 u1EC7 u0229 u1E1D u0119 u1E19 u1E1B u0247 u025B u01DD  g         base   f    letters     u0066 u24D5 uFF46 u1E1F u0192 uA77C  g         base   g    letters     u0067 u24D6 uFF47 u01F5 u011D u1E21 u011F u0121 u01E7 u0123 u01E5 u0260 uA7A1 u1D79 uA77F  g         base   h    letters     u0068 u24D7 uFF48 u0125 u1E23 u1E27 u021F u1E25 u1E29 u1E2B u1E96 u0127 u2C68 u2C76 u0265  g         base   hv   letters     u0195  g         base   i    letters     u0069 u24D8 uFF49 u00EC u00ED u00EE u0129 u012B u012D u00EF u1E2F u1EC9 u01D0 u0209 u020B u1ECB u012F u1E2D u0268 u0131  g         base   j    letters     u006A u24D9 uFF4A u0135 u01F0 u0249  g         base   k    letters     u006B u24DA uFF4B u1E31 u01E9 u1E33 u0137 u1E35 u0199 u2C6A uA741 uA743 uA745 uA7A3  g         base   l    letters     u006C u24DB uFF4C u0140 u013A u013E u1E37 u1E39 u013C u1E3D u1E3B u017F u0142 u019A u026B u2C61 uA749 uA781 uA747  g         base   lj   letters     u01C9  g         base   m    letters     u006D u24DC uFF4D u1E3F u1E41 u1E43 u0271 u026F  g         base   n    letters     u006E u24DD uFF4E u01F9 u0144 u00F1 u1E45 u0148 u1E47 u0146 u1E4B u1E49 u019E u0272 u0149 uA791 uA7A5  g         base   nj   letters     u01CC  g         base   o    letters     u006F u24DE uFF4F u00F2 u00F3 u00F4 u1ED3 u1ED1 u1ED7 u1ED5 u00F5 u1E4D u022D u1E4F u014D u1E51 u1E53 u014F u022F u0231 u00F6 u022B u1ECF u0151 u01D2 u020D u020F u01A1 u1EDD u1EDB u1EE1 u1EDF u1EE3 u1ECD u1ED9 u01EB u01ED u00F8 u01FF u0254 uA74B uA74D u0275  g         base   oi   letters     u01A3  g         base   ou   letters     u0223  g         base   oo   letters     uA74F  g         base   p   letters     u0070 u24DF uFF50 u1E55 u1E57 u01A5 u1D7D uA751 uA753 uA755  g         base   q   letters     u0071 u24E0 uFF51 u024B uA757 uA759  g         base   r   letters     u0072 u24E1 uFF52 u0155 u1E59 u0159 u0211 u0213 u1E5B u1E5D u0157 u1E5F u024D u027D uA75B uA7A7 uA783  g         base   s   letters     u0073 u24E2 uFF53 u00DF u015B u1E65 u015D u1E61 u0161 u1E67 u1E63 u1E69 u0219 u015F u023F uA7A9 uA785 u1E9B  g         base   t   letters     u0074 u24E3 uFF54 u1E6B u1E97 u0165 u1E6D u021B u0163 u1E71 u1E6F u0167 u01AD u0288 u2C66 uA787  g         base   tz   letters     uA729  g         base   u   letters     u0075 u24E4 uFF55 u00F9 u00FA u00FB u0169 u1E79 u016B u1E7B u016D u00FC u01DC u01D8 u01D6 u01DA u1EE7 u016F u0171 u01D4 u0215 u0217 u01B0 u1EEB u1EE9 u1EEF u1EED u1EF1 u1EE5 u1E73 u0173 u1E77 u1E75 u0289  g         base   v   letters     u0076 u24E5 uFF56 u1E7D u1E7F u028B uA75F u028C  g         base   vy   letters     uA761  g         base   w   letters     u0077 u24E6 uFF57 u1E81 u1E83 u0175 u1E87 u1E85 u1E98 u1E89 u2C73  g         base   x   letters     u0078 u24E7 uFF58 u1E8B u1E8D  g         base   y   letters     u0079 u24E8 uFF59 u1EF3 u00FD u0177 u1EF9 u0233 u1E8F u00FF u1EF7 u1E99 u1EF5 u01B4 u024F u1EFF  g         base   z   letters     u007A u24E9 uFF5A u017A u1E91 u017C u017E u1E93 u1E95 u01B6 u0225 u0240 u2C6C uA763  g          for var i 0  i lt defaultDiacriticsRemovalMap length  i          str   str replace defaultDiacriticsRemovalMap i  letters  defaultDiacriticsRemovalMap i  base          return str

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https   stackoverflow com a 37511463     With ES2015 ES6 String Prototype Normalize     const str    Cr  me Brul  e  str normalize  NFD   replace    u0300- u036f  g       gt   Creme Brulee        Two things are happening here          normalize  ing to NFD Unicode normal form decomposes combined graphemes into the combination of simple ones  The    of Cr  me ends up expressed as e        Using a regex character class to match the U 0300   U 036F range  it is now trivial to globally get rid of the diacritics  which the Unicode standard conveniently groups as the Combining Diacritical Marks Unicode block          See comment for performance testing       Alternatively  if you just want sorting      Intl Collator has sufficient support  85  right now  a polyfill is also available here but I haven t tested it   const c   new Intl Collator      creme brulee    cr  me brul  e    crame brulai    crome brouill      creme brulay    creme brulf      creme brul  a   sort c compare     crame brulai   creme brulay   creme brul  a   creme brulee    cr  me brul  e   creme brulf     crome brouill          creme brulee    cr  me brul  e    crame brulai    crome brouill     sort  a b    gt  a gt b    crame brulai    creme brulee    crome brouill      cr  me brul  e

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I think this might work a little cleaner better  though I haven t test it s performance    String prototype stripAccents   function         var translate re                                                                                                             g      var translate    aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY       return  this replace translate re  function match           return translate substr translate re source indexOf match -1  1                  Or if you are still too worried about performance  let s get the best of both worlds   String prototype stripAccents   function         var in chrs                                                                                                                      out chrs    aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY            transl           eval  var chars rgx       in chrs    g        for var i   0  i  lt  in chrs length  i     transl in chrs charAt i     out chrs charAt i         return this replace chars rgx  function match           return transl match              EDIT  by  Tomalak   I appreciate the idea  However  there are several things wrong with the implementation  as outlined in the comment below   Here is how I would implement it   var stripAccents    function        var in chrs                                                                                                                     out chrs     aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY          chars rgx   new RegExp       in chrs         g          transl          i        lookup      function  m    return transl m     m        for  i 0  i lt in chrs length  i          transl  in chrs i      out chrs i          return function  s    return s replace chars rgx  lookup

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A direct port to javascript of Kierons solution  https   github com rwarasaurus nano blob master system helpers php L61-73          Normalise a string replacing foreign characters        param  String  str     return  String  str      var normalize    function          var a                                                                                                                                                                                                                                                                                                                                                                       A    a    A    a    A    a    C    c    C    c    C    c    C    c    D    d          d    E    e    E    e    E    e    E    e    E    e    G    g    G    g    G    g    G    g    H    h    H    h    I    i    I    i    I    i    I    i    I    i              J    j    K    k    L    l    L    l    L    l              L    l    N    n    N    n    N    n         O    o    O    o    O    o                R    r    R    r    R    r    S    s    S    s    S    s                T    t    T    t    T    t    U    u    U    u    U    u    U    u    U    u    U    u    W    w    Y    y          Z    z    Z    z                           O    o    U    u    A    a    I    i    O    o    U    u    U    u    U    u    U    u    U    u                                      var b     A    A    A    A    A    A    AE    C    E    E    E    E    I    I    I    I    D    N    O    O    O    O    O    O    U    U    U    U    Y    s    a    a    a    a    a    a    ae    c    e    e    e    e    i    i    i    i    n    o    o    o    o    o    o    u    u    u    u    y    y    A    a    A    a    A    a    C    c    C    c    C    c    C    c    D    d    D    d    E    e    E    e    E    e    E    e    E    e    G    g    G    g    G    g    G    g    H    h    H    h    I    i    I    i    I    i    I    i    I    i    IJ    ij    J    j    K    k    L    l    L    l    L    l    L    l    l    l    N    n    N    n    N    n    n    O    o    O    o    O    o    OE    oe    R    r    R    r    R    r    S    s    S    s    S    s    S    s    T    t    T    t    T    t    U    u    U    u    U    u    U    u    U    u    U    u    W    w    Y    y    Y    Z    z    Z    z    Z    z    s    f    O    o    U    u    A    a    I    i    O    o    U    u    U    u    U    u    U    u    U    u    A    a    AE    ae    O    o         return function  str            var i   a length          while  i--  str   str replace a i   b i            return str                 And a slightly modified version  using a char-map instead of two arrays   To compare these two methods I made a simple benchmark  http   jsperf com replace-foreign-characters         Normalise a string replacing foreign characters        param  String  str     return  String      var normalize    function          var map                        A                      A                      A                      A                      A                      A                      AE                      C                      E                      E                      E                      E                      I                      I                      I                      I                      D                      N                      O                      O                      O                      O                      O                      O                      U                      U                      U                      U                      Y                      s                      a                      a                      a                      a                      a                      a                      ae                      c                      e                      e                      e                      e                      i                      i                      i                      i                      n                      o                      o                      o                      o                      o                      o                      u                      u                      u                      u                      y                      y                A    A                a    a                A    A                a    a                A    A                a    a                C    C                c    c                C    C                c    c                C    C                c    c                C    C                c    c                D    D                d    d                      D                d    d                E    E                e    e                E    E                e    e                E    E                e    e                E    E                e    e                E    E                e    e                G    G                g    g                G    G                g    g                G    G                g    g                G    G                g    g                H    H                h    h                H    H                h    h                I    I                i    i                I    I                i    i                I    I                i    i                I    I                i    i                I    I                i    i                     IJ                     ij                J    J                j    j                K    K                k    k                L    L                l    l                L    L                l    l                L    L                l    l                     L                     l                L    l                l    l                N    N                n    n                N    N                n    n                N    N                n    n                     n                O    O                o    o                O    O                o    o                O    O                o    o                      OE                      oe                R    R                r    r                R    R                r    r                R    R                r    r                S    S                s    s                S    S                s    s                S    S                s    s                      S                      s                T    T                t    t                T    T                t    t                T    T                t    t                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                W    W                w    w                Y    Y                y    y                      Y                Z    Z                z    z                Z    Z                z    z                      Z                      z                     s                      f                O    O                o    o                U    U                u    u                A    A                a    a                I    I                i    i                O    O                o    o                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                U    U                u    u                     A                     a                     AE                     ae                     O                     o                     nonWord     W g          mapping   function  c                return map c     c                    return function  str            return str replace nonWord  mapping

User · Answer

I can t think about an easier way to efficiently remove all diacritics from a string than using this amazing solution   See it in action    x000D   x000D  var string                   x000D   x000D  var string norm   string normalize  NFD   replace    u0300- u036f  g       x000D  console log string norm   x000D   x000D   x000D

User · Answer

Not a single answer mentions String localeCompare  which happens to do exactly what you originally wanted  but not what you re asking for   var list     a    b    c    o    u    z                       list sort  a  b    gt  a localeCompare b     console log list      Outputs   a          b    c    o          u          z     The second and third parameter are not supported by older browsers though  It s an option worth considering nonetheless

User · Answer

I can t speak to what you are trying to do specifically with the function itself  but if you don t like the regex being built every time  here are two solutions and some caveats about each   Here is one way to do this   function makeSortString s      if  makeSortString translate re  makeSortString translate re                   g    var translate                a          o          u              A          O          U       probably more to come        return   s replace makeSortString translate re  function match         return translate match                This will obviously make the regex a property of the function itself  The only thing you may not like about this  or you may  I guess it depends  is that the regex can now be modified outside of the function s body  So  someone could do this to modify the interally-used regex   makeSortString translate re     a-z  g    So  there is that option   One way to get a closure  and thus prevent someone from modifying the regex  would be to define this as an anonymous function assignment like this   var makeSortString    function       var translate re                   g    return function s        var translate                  a          o          u                A          O          U       probably more to come            return   s replace translate re  function match           return translate match                          Hopefully this is useful to you     UPDATE  It s early and I don t know why I didn t see the obvious before  but it might also be useful to put you translate object in a closure as well   var makeSortString    function       var translate re                   g    var translate                a          o          u              A          O          U       probably more to come        return function s        return   s replace translate re  function match           return translate match

User · Answer

Based on the solution by Jason Bunting  here is what I use now    The whole thing is for the jQuery tablesorter plug-in  For  nearly correct  sorting of non-English tables with tablesorter plugin it is necessary to make use of a custom textExtraction function    This one    translates the most common accented letters to unaccented ones  the list of supported letters is easily expandable  changes dates in German format   dd mm yyyy   to a recognized format   yyyy-mm-dd     Be careful to save the JavaScript file in UTF-8 encoding or it won t work      file encoding must be UTF-8  function getTextExtractor       return  function         var patternLetters                                                                     g      var patternDateDmy         D     d 1 2      d 1 2      d 2 4          var lookupLetters                  a          o          u                A          O          U                a          a          a                e          e          e                u          u          u                o          o          o                A          A          A                E          E          E                U          U          U                O          O          O                s             var letterTranslator   function match           return lookupLetters match     match             return function node          var text     trim   node  text           var date   text match patternDateDmy         if  date          return  date 3   date 2   date 1   join  -          else         return text replace patternLetters  letterTranslator                     You can use it like this      table sortable   tablesorter      textExtraction  getTextExtractor

User · Answer

For the lads using TypeScript and those who don t want to deal with string prototypes  here is a typescript version of Ed  s answer          Usage example       Some string  replace    a-zA-Z0-9-   g  char   gt  ToLatinMap get char                 Map      export let ToLatinMap  Map lt string  string gt    new Map lt string  string gt                    A              A    A                   A                   A                   A                   A                   A              A    A                    A                   A                   A                   A                   A                   A                    A              A    A                   A                   A                   A                   A                    A                   A                   A              A    A              A    A                    A                   A                   A                   A                    A                   AA                    AE                   AE                   AE                   AO                   AU                   AV                   AV                   AY                   B                   B                   B                   B                   B                   B              C    C              C    C                    C                   C              C    C              C    C                   C                   C              D    D                   D                   D                   D                   D                   D                   D                   D                   D                    D                   D                   DZ                   DZ                    E              E    E              E    E                   E                   E                    E                   E                   E                   E                   E                   E                   E                    E              E    E                   E                   E                    E                   E                   E              E    E                   E                   E              E    E                   E                   E                   E                   ET                   F                    F                   G              G    G              G    G              G    G              G    G              G    G                   G                   G              G    G                   H                   H                   H              H    H                   H                   H                   H                   H              H    H                    I              I    I              I    I                    I                    I                   I              I    I                   I                   I                    I                   I                   I              I    I              I    I              I    I              I    I                   I                   D                 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       e                   e                   e                   e                   et                   f                    f                   f                   f                   g              g    g              g    g              g    g              g    g              g    g                   g                   g                   g              g    g                   h                   h                   h              h    h                   h                   h                   h                   h                   h                   h              h    h                   hv                    i              i    i              i    i                    i                    i                   i                   i                   i                    i                   i                   i              i    i              i    i                   i                   i              i    i                   i                   d                   f      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[javascript] Efficiently replace all accented characters in a string?

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