JS - Format Number as Currency

money_format.js

exports.format = function(number, decimals, decSymbol, thousSymbol) { //number, decimal places , decimal symobl (.), thousands separator (,)
	    decimals = isNaN(decimals = Math.abs(decimals)) ? 2 : decimals, 
	    decSymbol = decSymbol == undefined ? "." : decSymbol, 
	    thousSymbol = thousSymbol == undefined ? "," : thousSymbol, 
	    posNegSymbol = number < 0 ? "-" : "", 
	    i = parseInt(number = Math.abs(+number || 0).toFixed(decimals)) + "", 
	    j = (j = i.length) > 3 ? j % 3 : 0;
	   
		return posNegSymbol + '$' + (j ? i.substr(0, j) + thousSymbol : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + thousSymbol) + (decimals ? decSymbol + Math.abs(number - i).toFixed(decimals).slice(2) : "");
};

/*
*  var money = require('money_format');
*  money.format(numberToFormat,0);
*/