JavaScript - Replace all commas in a string

Question

I have a string with multiple commas  and the string replace method will only change the first one   var mystring    this is a test  mystring replace      newchar   -1    Result   thisnewcharis a test   The documentation indicates that the default replaces all  and that  -1  also indicates to replace all  but it is unsuccessful  Any thoughts

User · Answer

Just for fun   var mystring    this is a test    var newchar       mystring   mystring split      join newchar

User · Answer

The third parameter of String prototype replace   function was never defined as a standard  so most browsers simply do not implement it   The best way is to use regular expression with g  global  flag    x000D   x000D  var myStr    this is a test   x000D  var newStr   myStr replace    g   -    x000D   x000D  console log  newStr         this-is-a-test  x000D   x000D   x000D    Still have issues   It is important to note  that regular expressions use special characters that need to be escaped  As an example  if you need to escape a dot     character  you should use      literal  as in the regex syntax a dot matches any single character  except line terminators     x000D   x000D  var myStr    this is a test   x000D  var newStr   myStr replace     g   -    x000D   x000D  console log  newStr         this-is-a-test  x000D   x000D   x000D    If you need to pass a variable as a replacement string  instead of using regex literal you may create RegExp object and pass a string as the first argument of the constructor  The normal string escape rules  preceding special characters with   when included in a string  will be necessary    x000D   x000D  var myStr    this is a test   x000D  var reStr          x000D  var newStr   myStr replace new RegExp reStr   g     -    x000D   x000D  console log  newStr         this-is-a-test  x000D   x000D   x000D

User · Answer

var mystring    this is a test  mystring replace    g   newchar      Use the global g  flag  Simple DEMO

[javascript] JavaScript - Replace all commas in a string

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