Syntax: number_format(number, dec, float sep, thousands sep)

function number_format(a, b, c, d) {
     return (a = (a + "").split("."))[0].replace(/\d(?=(.{3})+$)/g, "$&" + (d || ",")) + ((c || ".") + (a[1] || "") + Array(b = b || 0).join(0)).substr(0, b && b + 1);
}

Edit: Added useless dec parameter and replaced prototype with plain ol' function.

Edit: Informed that when dec is 0 on a floating number, the decimal isn't removed. Fixededed.

Edit: Updated to add 0s when dec is extended. Also had the thousands and float sep parameters swapped.

Edit: Optimized a bit. =)



Last Edit: Aug 25, 2010 4:41:20 GMT by Aaron