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Add Comma automatically while entering amounts in textbox using Javascript

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Use following JavaScript function to add comma in numeric input in textbox


function Comma(Num)
 {
       Num += '';
       Num = Num.replace(/,/g, '');

       x = Num.split('.');
       x1 = x[0];

       x2 = x.length > 1 ? '.' + x[1] : '';

       
         var rgx = /(\d)((\d)(\d{2}?)+)$/;

       while (rgx.test(x1))

       x1 = x1.replace(rgx, '$1' + ',' + '$2');
     
       return x1 + x2;       
        
 }

Use following event of input textbox to call above function 

onkeyup = "javascript:this.value=Comma(this.value);"

Comments

  1. AnonymousJune 12, 2013 at 9:36 PM

    This doesn't work as it should.
    It works ok for the first thousand - a comma is inserted after entering 1000 - but when you continue entering numbers after that, it inserts consecutive commas after 2 digits, not 3, so you get something like this: 10,00,000 - where it should be: 1,000,000

    Did you test this with more than 4 digits?

    ReplyDelete
    Replies
    1. vikas sonichyaJuly 7, 2013 at 12:19 AM

      Thank you for your valuable comment

      i will look into the issue and update this post soon

      Delete
    2. MunazzahNovember 18, 2013 at 11:28 PM

      just replace the regular expression with this:

      var rgx = /(\d)((\d{3}?)+)$/;

      Delete
  2. AnonymousJuly 4, 2018 at 4:05 AM

    in c#

    ReplyDelete
  3. AnonymousJuly 4, 2018 at 4:06 AM

    i need in asp.net textbox when type amount 12000 out should come in 12,000 likes this

    ReplyDelete

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