Replace strings globaly from an array pattern in JavaScript

Question

I'm trying to replace multi characters from array globally with regular expresion, but it just replace the first character for me:

var ARABIC_PUNC_AND_REPLACEMENTS = [
    [
      ',', // Comma
      ';', // Semicolon
    ],
    [
      '،', // Comma
      '؛', // Semicolon
    ]
  ];

var string = ',,, ;;;';

for (var i = 0; i < ARABIC_PUNC_AND_REPLACEMENTS[0].length; i++) {
   string = string.replace(ARABIC_PUNC_AND_REPLACEMENTS[0][i], ARABIC_PUNC_AND_REPLACEMENTS[1][i]);
}

console.log(string); // "،,, ؛;;"
// I want this to be returnd: "،،، ؛؛؛"

Answer 1

You need to construct a RegExp and pass global flag like this:

for (var i = 0; i < ARABIC_PUNC_AND_REPLACEMENTS[0].length; i++) {
   string = string.replace(new RegExp(ARABIC_PUNC_AND_REPLACEMENTS[0][i], 'g'),
     ARABIC_PUNC_AND_REPLACEMENTS[1][i]);
}

console.log(string);
//=> "،،، ؛؛؛"