How can I strip all punctuation from a string in JavaScript using regex

Question

If I have a string with any type of non-alphanumeric character in it     This   -  is    an        amp    example       of a   -  string with       punctuation    How would I get a no-punctuation version of it in JavaScript    This is an example of a string with punctuation

User · Answer

If you want to retain only alphabets and spaces  you can do   str replace    a-zA-Z    g      replace     2

User · Answer

I ran across the same issue  this solution did the trick and was very readable    var sentence    This   -  is    an        amp    example       of a   -  string with       punctuation   var newSen   sentence match      W   g  join       console log newSen     Result     This is an example of a string with punctuation    The trick was to create a negated set  This means that it matches anything that is not within the set i e    abc  - not a  b or c   W is any non-word  so    W   will negate anything that is not a word char    By adding in the    underscore  you can negate that as well    Make it apply globally  g  then you can run any string through it and clear out the punctuation         W   g   Nice and clean

User · Answer

In a Unicode-aware language  the Unicode Punctuation character property is  p P      which you can usually abbreviate  pP and sometimes expand to  p Punctuation  for readability    Are you using a Perl Compatible Regular Expression library

User · Answer

If you want to remove specific punctuation from a string  it will probably be best to explicitly remove exactly what you want like  replace              amp         -       g       Doing the above still doesn t return the string as you have specified it  If you want to remove any extra spaces that were left over from removing crazy punctuation  then you are going to want to do something like  replace   s 2   g         My full example   var s    This   -  is    an        amp    example       of a   -  string with       punctuation   var punctuationless   s replace              amp         -       g      var finalString   punctuationless replace   s 2   g         Results of running code in firebug console

User · Answer

It depends on what you are trying to return  I used this recently   return text match   a-z  i

User · Answer

For en-US   American English   strings this should suffice    This   -  is    an        amp    example       of a   -  string with       punctuation  replace     a-zA-Z   g      replace    s s  g          Be aware that if you support UTF-8 and characters like chinese russian and all  this will replace them as well  so you really have to specify what you want

User · Answer

If you want to remove punctuation from any string you should use the P Unicode class   But  because classes are not accepted in the JavaScript RegEx  you could try this RegEx that should match all the punctuation  It matches the following categories  Pc Pd Pe Pf Pi Po Ps Sc Sk Sm So GeneralPunctuation SupplementalPunctuation CJKSymbolsAndPunctuation CuneiformNumbersAndPunctuation   I created it using this online tool that generates Regular Expressions specifically for JavaScript  That s the code to reach your goal    x000D   x000D  var punctuationRegEx      -  -  -  -   -    -    -      -           -  -  -   -    -     -  -      -  -   -  -    -  -  -  -   -     -   -      -  -  -     -   -  -  -  -  -   -  -  -  -  -  -  -  -  -   -  -  -  -  -  -  -   -  -  -  -  -  u2000- u206e -  -  -  -  -  -   -P -    e -  -  -   -  -  -  - --  -  -  -  -  -  -   -   -  -   -  -  -   -  -  -  -  -  - u2e7e -  -  -  -  u3000-  -     -  -  -  -  -   -  -  -  -  -  -  -    -  -  -  -  -  -  -   -   -  -  -  -  -  -  -  -  -  -  -  -  -    ud800  udd00- udd02 udd37- udd3f udd79- udd89 udd90- udd9b uddd0- uddfc udf9f udfd0   ud802  udd1f udd3f ude50- ude58   ud809  udc00- udc7e   ud834  udc00- udcf5 udd00- udd26 udd29- udd64 udd6a- udd6c udd83- udd84 udd8c- udda9 uddae- udddd ude00- ude41 ude45 udf00- udf56   ud835  udec1 udedb udefb udf15 udf35 udf4f udf6f udf89 udfa9 udfc3   ud83c  udc00- udc2b udc30- udc93  g  x000D  var string    This   -  is    an        amp    example       of a   -  string with       punctuation   x000D  var newString   string replace punctuationRegEx      replace    s  2   g    1    x000D  console log newString  x000D   x000D   x000D

User · Answer

Here are the standard punctuation characters for US-ASCII        amp       -     lt   gt               For Unicode punctuation  such as curly quotes  em-dashes  etc   you can easily match on specific block ranges  The General Punctuation block is  u2000- u206F  and the Supplemental Punctuation block is  u2E00- u2E7F   Put together  and properly escaped  you get the following RegExp      u2000- u206F u2E00- u2E7F         amp       -      lt   gt                   That should match pretty much any punctuation you encounter  So  to answer the original question   var punctRE      u2000- u206F u2E00- u2E7F         amp       -      lt   gt                g  var spaceRE     s  g  var str    This  -  is    an        amp    example       of a   -  string with       punctuation   str replace punctRE      replace spaceRE          gt  gt   This is an example of a string with punctuation    US-ASCII source  http   docs oracle com javase 7 docs api java util regex Pattern html posix  Unicode source  http   kourge net projects regexp-unicode-block

User · Answer

str   str replace     w s    g                replace   s  g          Removes everything except alphanumeric characters and whitespace  then collapses multiple adjacent characters to single spaces   Detailed explanation     w is any digit  letter  or underscore   s is any whitespace     w s  is anything that s not a digit  letter  whitespace  or underscore     w s    is the same as  3 except with the underscores added back in

User · Answer

A-Za-z0-9 s  g should match all punctuation but keep the spaces  So you can use  replace   s 2   g       to replace extra spaces if you need to do so  You can test the regex in http   rubular com    replace    A-Za-z0-9 s  g     replace   s 2   g         Update  Will only work if the input is ANSI English

User · Answer

if you are using lodash     words  This  is   my - test line    join        This Example     words   This   -  is    an        amp    example       of a   -  string with       punctuation    join

User · Answer

As per Wikipedia s list of punctuations I had to build the following regex which detects punctuations                         -      -               - -                      amp                                       -                                                  M  P

User · Answer

I ll just put it here for others   Match all punctuation chars for for all languages   Constructed from Unicode punctuation category and added some common keyboard symbols like   and brackets and  -    http   www fileformat info info unicode category Po list htm  basic replace     test da  te  xt  replace    -       amp                             lt  gt    u00a1 u00a7 u00b6 u00b7 u00bf u037e u0387 u055a- u055f u0589 u05c0 u05c3 u05c6 u05f3 u05f4 u0609 u060a u060c u060d u061b u061e u061f u066a- u066d u06d4 u0700- u070d u07f7- u07f9 u0830- u083e u085e u0964 u0965 u0970 u0af0 u0df4 u0e4f u0e5a u0e5b u0f04- u0f12 u0f14 u0f85 u0fd0- u0fd4 u0fd9 u0fda u104a- u104f u10fb u1360- u1368 u166d u166e u16eb- u16ed u1735 u1736 u17d4- u17d6 u17d8- u17da u1800- u1805 u1807- u180a u1944 u1945 u1a1e u1a1f u1aa0- u1aa6 u1aa8- u1aad u1b5a- u1b60 u1bfc- u1bff u1c3b- u1c3f u1c7e u1c7f u1cc0- u1cc7 u1cd3 u2016 u2017 u2020- u2027 u2030- u2038 u203b- u203e u2041- u2043 u2047- u2051 u2053 u2055- u205e u2cf9- u2cfc u2cfe u2cff u2d70 u2e00 u2e01 u2e06- u2e08 u2e0b u2e0e- u2e16 u2e18 u2e19 u2e1b u2e1e u2e1f u2e2a- u2e2e u2e30- u2e39 u3001- u3003 u303d u30fb ua4fe ua4ff ua60d- ua60f ua673 ua67e ua6f2- ua6f7 ua874- ua877 ua8ce ua8cf ua8f8- ua8fa ua92e ua92f ua95f ua9c1- ua9cd ua9de ua9df uaa5c- uaa5f uaade uaadf uaaf0 uaaf1 uabeb ufe10- ufe16 ufe19 ufe30 ufe45 ufe46 ufe49- ufe4c ufe50- ufe52 ufe54- ufe57 ufe5f- ufe61 ufe68 ufe6a ufe6b uff01- uff03 uff05- uff07 uff0a uff0c uff0e uff0f uff1a uff1b uff1f uff20 uff3c uff61 uff64 uff65   g      testda text    added  s as space    da fla  te  te  split    s -       amp                             lt  gt    u00a1 u00a7 u00b6 u00b7 u00bf u037e u0387 u055a- u055f u0589 u05c0 u05c3 u05c6 u05f3 u05f4 u0609 u060a u060c u060d u061b u061e u061f u066a- u066d u06d4 u0700- u070d u07f7- u07f9 u0830- u083e u085e u0964 u0965 u0970 u0af0 u0df4 u0e4f u0e5a u0e5b u0f04- u0f12 u0f14 u0f85 u0fd0- u0fd4 u0fd9 u0fda u104a- u104f u10fb u1360- u1368 u166d u166e u16eb- u16ed u1735 u1736 u17d4- u17d6 u17d8- u17da u1800- u1805 u1807- u180a u1944 u1945 u1a1e u1a1f u1aa0- u1aa6 u1aa8- u1aad u1b5a- u1b60 u1bfc- u1bff u1c3b- u1c3f u1c7e u1c7f u1cc0- u1cc7 u1cd3 u2016 u2017 u2020- u2027 u2030- u2038 u203b- u203e u2041- u2043 u2047- u2051 u2053 u2055- u205e u2cf9- u2cfc u2cfe u2cff u2d70 u2e00 u2e01 u2e06- u2e08 u2e0b u2e0e- u2e16 u2e18 u2e19 u2e1b u2e1e u2e1f u2e2a- u2e2e u2e30- u2e39 u3001- u3003 u303d u30fb ua4fe ua4ff ua60d- ua60f ua673 ua67e ua6f2- ua6f7 ua874- ua877 ua8ce ua8cf ua8f8- ua8fa ua92e ua92f ua95f ua9c1- ua9cd ua9de ua9df uaa5c- uaa5f uaade uaadf uaaf0 uaaf1 uabeb ufe10- ufe16 ufe19 ufe30 ufe45 ufe46 ufe49- ufe4c ufe50- ufe52 ufe54- ufe57 ufe5f- ufe61 ufe68 ufe6a ufe6b uff01- uff03 uff05- uff07 uff0a uff0c uff0e uff0f uff1a uff1b uff1f uff20 uff3c uff61 uff64 uff65   g    added   to invert patternt to match not punctuation but the words them selves    test  the  te  xt  match     s -       amp                             lt  gt    u00a1 u00a7 u00b6 u00b7 u00bf u037e u0387 u055a- u055f u0589 u05c0 u05c3 u05c6 u05f3 u05f4 u0609 u060a u060c u060d u061b u061e u061f u066a- u066d u06d4 u0700- u070d u07f7- u07f9 u0830- u083e u085e u0964 u0965 u0970 u0af0 u0df4 u0e4f u0e5a u0e5b u0f04- u0f12 u0f14 u0f85 u0fd0- u0fd4 u0fd9 u0fda u104a- u104f u10fb u1360- u1368 u166d u166e u16eb- u16ed u1735 u1736 u17d4- u17d6 u17d8- u17da u1800- u1805 u1807- u180a u1944 u1945 u1a1e u1a1f u1aa0- u1aa6 u1aa8- u1aad u1b5a- u1b60 u1bfc- u1bff u1c3b- u1c3f u1c7e u1c7f u1cc0- u1cc7 u1cd3 u2016 u2017 u2020- u2027 u2030- u2038 u203b- u203e u2041- u2043 u2047- u2051 u2053 u2055- u205e u2cf9- u2cfc u2cfe u2cff u2d70 u2e00 u2e01 u2e06- u2e08 u2e0b u2e0e- u2e16 u2e18 u2e19 u2e1b u2e1e u2e1f u2e2a- u2e2e u2e30- u2e39 u3001- u3003 u303d u30fb ua4fe ua4ff ua60d- ua60f ua673 ua67e ua6f2- ua6f7 ua874- ua877 ua8ce ua8cf ua8f8- ua8fa ua92e ua92f ua95f ua9c1- ua9cd ua9de ua9df uaa5c- uaa5f uaade uaadf uaaf0 uaaf1 uabeb ufe10- ufe16 ufe19 ufe30 ufe45 ufe46 ufe49- ufe4c ufe50- ufe52 ufe54- ufe57 ufe5f- ufe61 ufe68 ufe6a ufe6b uff01- uff03 uff05- uff07 uff0a uff0c uff0e uff0f uff1a uff1b uff1f uff20 uff3c uff61 uff64 uff65   g    for language like Hebrew maybe to remove     the single and the double quote  and do more thinking on it   using this script   step 1  select in Firefox holding control a column of U 1234 numbers and copy it  do not copy U 12456 they replace English  step 2  i did in chrome find some textarea and paste it into it then rightclick and click inspect   then you can access the selected element with  0   var x  0 value var z x replace  U   g     split    r n     map function a  return parseInt a 16    var ret    z forEach function a k  if z k-1    a-1  amp  amp  z k 1    a 1    if ret ret length-1    -  ret push  -     else    var c a toString 16   var prefix c length lt 3    u0000  c length lt 5    u0000     u000000   var uu prefix substring 0 prefix length-c length  c  ret push c length lt 3 String fromCharCode a  uu     ret join       step 3 copied over the first letters the ascii as separate chars not ranges because someone might add or remove individual chars

[javascript] How can I strip all punctuation from a string in JavaScript using regex?

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