Formatting Numbers With Comma Using Regular Expression In JavaScript

Formatting Numbers With Comma Using Regular Expression In JavaScript

- December 13, 2010

In asp.net c#, this can be achieved by String.Format(), however in javascript/jquery, this can be achieved using a simple JavaScript function:

  function addCommas(nStr) {
      nStr += '';
      x = nStr.split('.');
      x1 = x[0];
      x2 = x.length > 1 ? '.' + x[1] : '';
      var rgx = /(\d+)(\d{3})/;
      while (rgx.test(x1)) {
          x1 = x1.replace(rgx, '$1' + ',' + '$2');
      }
      return x1 + x2;
  }

In your script, you can call it using:

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var number = 123456.99;  
var result = addCommas(number);  
alert(result);

Source: JavaScript Number Format

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