Place commas in Javascript integers

Question

So I have a value in Javascript:

var val = Entry.val;

One example of this value is 277385. How do I, in Javascript, convert this number to 277,385, as well as any number to that so it has commas in the correct spots?

Answer 1

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;
}

via here.

Answer 2

This should do it for you:

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;
    }

Usage:

addCommas(1000)
// 1,000

addCommas(1231.897243)
// 1,231.897243

Thanks to mredjk.com