How do I split a string into an array of characters

Question

var s    overpopulation   var ar       ar   s split    alert ar     I want to string split a word into array of characters   The above code doesn t seem to work - it returns   overpopulation   as Object    How do i split it into array of characters  if original string doesn t contain commas and whitespace

User · Answer

Old question but I should warn   Do NOT use  split      You ll get weird results with non-BMP  non-Basic-Multilingual-Plane  character sets   Reason is that methods like  split   and  charCodeAt   only respect the characters with a code point below 65536  bec  higher code points are represented by a pair of  lower valued   surrogate  pseudo-characters      length            gt  6    split             gt                                     length             gt  2    split              gt               Use ES2015  ES6  features where possible   Using the spread operator   let arr       str     Or Array from  let arr   Array from str     Or split with the new u RegExp flag   let arr   str split        u     Examples                         gt                                  gt                 For ES5  options are limited   I came up with this function that internally uses MDN example to get the correct code point of each character   function stringToArray       var i   0      arr           codePoint    while   isNaN codePoint   knownCharCodeAt str  i          arr push String fromCodePoint codePoint        i          return arr      This requires knownCharCodeAt   function and for some browsers  a String fromCodePoint   polyfill   if   String fromCodePoint       ES6 Unicode Shims 0 1      2012 Steven Levithan   MIT License     String fromCodePoint   function fromCodePoint              var chars       point  offset  units  i          for  i   0  i  lt  arguments length    i                point   arguments i               offset   point - 0x10000              units   point  gt  0xFFFF    0xD800    offset  gt  gt  10   0xDC00    offset  amp  0x3FF      point               chars push String fromCharCode apply null  units                      return chars join                Examples   stringToArray                gt               stringToArray             gt                   Note  str index   ES5  and str charAt index  will also return weird results with non-BMP charsets  e g     charAt 0  returns       UPDATE  Read this nice article about JS and unicode

User · Answer

A string in Javascript is already a character array   You can simply access any character in the array as you would any other array   var s    overpopulation   alert s 0      alerts o    UPDATE  As is pointed out in the comments below  the above method for accessing a character in a string is part of ECMAScript 5 which certain browsers may not conform to   An alternative method you can use is charAt index    var s    overpopulation       alert s charAt 0      alerts o

User · Answer

You can use the regular expression            overpopulation  split            The negative look-ahead assertion       will match right in front of every character

User · Answer

To support emojis use this    Dragon    split        u       gt    D    r    a    g    o    n

User · Answer

You can split on an empty string   var chars    overpopulation  split          If you just want to access a string in an array-like fashion  you can do that without split   var s    overpopulation   for  var i   0  i  lt  s length  i          console log s charAt i          You can also access each character with its index using normal array syntax  Note  however  that strings are immutable  which means you can t set the value of a character using this method  and that it isn t supported by IE7  if that still matters to you    var s    overpopulation    console log s 3       logs  r

User · Answer

It s as simple as   s split        The delimiter is an empty string  hence it will break up between each single character

User · Answer

split     would split emojis in half   Onur s solutions and the regex s proposed work for some emojis  but can t handle more complex languages or combined emojis   Consider this emoji being ruined                returns                     instead of          Also consider this Hindi text            which is split like this                       returns                                              but should in fact be split like this                              because some of the characters are combining marks  think diacritics accents in European languages    You can use the grapheme-splitter library for this   https   github com orling grapheme-splitter  It does proper standards-based letter split in all the hundreds of exotic edge-cases - yes  there are that many

User · Answer

The split   method in javascript accepts two parameters  a separator and a limit  The separator specifies the character to use for splitting the string  If you don t specify a separator  the entire string is returned  non-separated  But  if you specify the empty string as a separator  the string is split between each character   Therefore   s split       will have the effect you seek   More information here

[javascript] How do I split a string into an array of characters?

Do NOT use `.split('')`

Use ES2015 (ES6) features where possible:

For ES5, options are limited:

Examples related to javascript

Examples related to string