Displaying a number in Indian format using JavaScript

Indian money format function

function INRCurrencyFormat(x){ x=x.toString(); var afterPoint = ''; if(x.indexOf('.') > 0) afterPoint = x.substring(x.indexOf('.'),x.length); x = Math.floor(x); x=x.toString(); var lastThree = x.substring(x.length-3); var otherNumbers = x.substring(0,x.length-3); if(otherNumbers != '') lastThree = ',' + lastThree; var res = otherNumbers.replace(/\B(?=(\d{2})+(?!\d))/g, ",") + lastThree + afterPoint; return res; } INRCurrencyFormat(123456789.00)