Capitalize words in string

Question

What is the best approach to capitalize words in a string

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This should cover most basic use cases   const capitalize    str    gt        if  typeof str      string           throw Error  Feed me string         else if   str          return          else         return str          split               map s   gt                if  s length    1                     return s toUpperCase                 else                   const firstLetter   s split     0  toUpperCase                   const restOfStr   s substr 1  s length  toLowerCase                   return firstLetter   restOfStr                                        join                capitalize  THIS IS A BOOK        gt  This Is A Book capitalize  this is a book        gt  This Is A Book capitalize  a 2nd 5 hour boOk thIs weEk        gt  A 2nd 5 Hour Book This Week   Edit  Improved readability of mapping

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My solution   String prototype toCapital   function          return this toLowerCase   split      map function  i            if  i length  gt  2                return i charAt 0  toUpperCase     i substr 1                      return i         join            Example      lL riGht  toCapital       Returns    ll Right

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function capitalize s       return s toLowerCase   replace    b  g  function a   return a toUpperCase             capitalize  this IS THE wOrst string eVeR      output   This Is The Worst String Ever   Update   It appears this solution supersedes mine  https   stackoverflow com a 7592235 104380

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The shortest implementation for capitalizing words within a string is the following using ES6 s arrow functions     your string  replace   b w g  l   gt  l toUpperCase         gt   Your String    ES5 compatible implementation    your string  replace   b w g  function l   return l toUpperCase           gt   Your String    The regex basically matches the first letter of each word within the given string and transforms only that letter to uppercase     b matches a word boundary  the beginning or ending of word    w matches the following meta-character  a-zA-Z0-9     For non-ASCII characters refer to this solution instead       ur stri  g  replace      s  S g  l   gt  l toUpperCase      This regex matches the first letter and every non-whitespace letter preceded by whitespace within the given string and transforms only that letter to uppercase     s matches a whitespace character  S matches a non-whitespace character  x y  matches any of the specified alternatives   A non-capturing group could have been used here as follows        s  S g though the g flag within our regex wont capture sub-groups by design anyway   Cheers

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Capitalizes first letters of words in string      param  string  str String to be modified     param  boolean false  lower Whether all other letters should be lowercased     return  string      usage      capitalize  fix this string           - gt   Fix This String       capitalize  javaSCrIPT                - gt   JavaSCrIPT       capitalize  javaSCrIPT   true         - gt   Javascript      const capitalize    str  lower   false    gt     lower   str toLowerCase     str  replace        s           S g  match   gt  match toUpperCase            fixes Marco Demaio s solution where first letter with a space preceding is not capitalized    capitalize   javascript       - gt    Javascript     can handle national symbols and accented letters    capitalize                              - gt                         capitalize  localit     tilacol           - gt   Localit     tilacol     can handle quotes and braces    capitalize   quotes   and   braces   braces   braces         - gt   Quotes   And   Braces   Braces   Braces

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http   www mediacollege com internet javascript text case-capitalize html is one of many answers out there   Google can be all you need for such problems   A na  ve approach would be to split the string by whitespace  capitalize the first letter of each element of the resulting array and join it back together  This leaves existing capitalization alone  e g  HTML stays HTML and doesn t become something silly like Html   If you don t want that affect  turn the entire string into lowercase before splitting it up

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Using JavaScript and html   x000D   x000D  String prototype capitalize   function     x000D    return this replace      s   a-z   g  function m  p1  p2    x000D      return p1   p2 toUpperCase    x000D        x000D     x000D   lt form name  form1  method  post  gt  x000D     lt input name  instring  type  text  value  this is the text string  size  30  gt  x000D     lt input type  button  name  Capitalize  value  Capitalize  gt  gt   onclick  form1 outstring value form1 instring value capitalize     gt  x000D     lt input name  outstring  type  text  value    size  30  gt  x000D   lt  form gt  x000D   x000D   x000D    Basically  you can do string capitalize   and it ll capitalize every 1st letter of each word   Source  http   www mediacollege com internet javascript text case-capitalize html

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A simple  straightforward  non-regex  solution  const capitalizeFirstLetter   s   gt     s split      map w   gt  w charAt 0  toUpperCase     w slice 1   join        Break the string into words Array  by space delimiter  Break each word to first character   rest of characters in the word The first letter is transformed to uppercase  and the rest remains as-is Joins back the Array into a string with spaces

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The answer provided by vsync works as long as you don t have accented letters in the input string   I don t know the reason  but apparently the  b in regexp matches also accented letters  tested on IE8 and Chrome   so a string like  localit    would be wrongly capitalized converted into  Localit     the    letter gets capitalized cause the regexp thinks it s a word boundary   A more general function that works also with accented letters is this one   String prototype toCapitalize   function         return this toLowerCase   replace      s S g  function a    return a toUpperCase            You can use it like this   alert   hello localit    toCapitalize

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John Resig  of jQuery fame   ported a perl script  written by John Gruber  to JavaScript  This script capitalizes in a more intelligent way  it doesn t capitalize small words like  of  and  and  for example     You can find it here  Title Capitalization in JavaScript

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Since everyone has given you the JavaScript answer you ve asked for  I ll throw in that the CSS property text-transform  capitalize will do exactly this   I realize this might not be what you re asking for - you haven t given us any of the context in which you re running this - but if it s just for presentation  I d definitely go with the CSS alternative

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Use This    x000D   x000D  String prototype toTitleCase   function     x000D    return this charAt 0  toUpperCase     this slice 1   x000D    x000D   x000D  let str    text   x000D  document querySelector   demo   innerText   str toTitleCase    x000D   lt div class    app  gt  x000D     lt p id    demo  gt  lt  p gt  x000D   lt  div gt  x000D   x000D   x000D

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I like to go with easy process  First Change string into Array for easy iterating  then using map function change each word as you want it to be   function capitalizeCase str        var arr   str split           var t      var newt      var newarr   arr map function d           t   d split              newt   t map function d  i                     if i     0                         return d toUpperCase                                           return d toLowerCase                               return newt join                    var s   newarr join           return s

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Jquery or Javascipt doesn t provide a built-in method to achieve this   CSS test transform  text-transform capitalize   doesn t really capitalize the string s data but shows a capitalized rendering on the screen   If you are looking for a more legit way of achieving this in the data level using plain vanillaJS  use this solution     var capitalizeString   function  word            word   word toLowerCase        if  word indexOf         -1       passed param contains 1   words         word   word replace   s g   --            var result     camelCase  -    word           return result replace  - g              else       return   camelCase  -    word

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There s also locutus  https   locutus io php strings ucwords  which defines it this way   function ucwords str          discuss at  http   locutus io php ucwords       original by  Jonas Raoni Soares Silva  http   www jsfromhell com       improved by  Waldo Malqui Silva  http   waldo malqui info       improved by  Robin      improved by  Kevin van Zonneveld  http   kvz io       bugfixed by  Onno Marsman  https   twitter com onnomarsman       bugfixed by  Cetvertacov Alexandr  https   github com cetver          input by  James  http   www james-bell co uk          example 1  ucwords  kevin van  zonneveld          returns 1   Kevin Van  Zonneveld         example 2  ucwords  HELLO WORLD          returns 2   HELLO WORLD         example 3  ucwords                                                               returns 3                                                               example 4  ucwords  t   st  a  p     af               d as e   e   p                         returns 4       st     p    af           G     as e   e   p                    return  str       replace        s     g  function   1        return  1 toUpperCase

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This solution dose not use regex  supports accented characters and also supported by almost every browser   function capitalizeIt str        if  str  amp  amp  typeof str       string             str   str split                   for  var i   0  x   str length  i  lt  x  i                  if  str i                     str i    str i  0  toUpperCase     str i  substr 1                                   return str join             else           return str                Usage       console log capitalizeIt    ao 2nd inside Javascript programme       Output         ao 2nd Inside Javascript Programme

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Ivo s answer is good  but I prefer to not match on  w because there s no need to capitalize 0-9 and A-Z  We can ignore those and only match on a-z    your string  replace   b a-z  g  match   gt  match toUpperCase         gt   Your String    It s the same output  but I think clearer in terms of self-documenting code

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If you re using lodash in your JavaScript application  You can use   capitalize    x000D   x000D  console log    capitalize      ur stri  g      x000D    x000D   lt script src  https   cdnjs cloudflare com ajax libs lodash js 4 17 5 lodash min js  gt  lt  script gt  x000D   x000D   x000D

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This code capitalize words after dot   function capitalizeAfterPeriod input         var text           var str     input  val        text   convert str toLowerCase   split        join            var textoFormatado   convert text split       join             input  val textoFormatado      function convert str       for var i   0  i  lt  str length  i           str i    str i  split            if  str i  0      undefined             str i  0    str i  0  toUpperCase                  str i    str i  join              return str

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I would use regex for this purpose  myString      this Is my sTring      myString trim   toLowerCase   replace   w S  g   w    gt   w replace    w    c    gt  c toUpperCase

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You can use the following to capitalize words in a string   function capitalizeAll str        var partes   str split            var nuevoStr             for i 0  i lt partes length  i         nuevoStr        partes i  toLowerCase   replace   b w g  l   gt  l toUpperCase    trim                    return nuevoStr

[javascript] Capitalize words in string

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