Human readable bandwith

HumanBandwidth.js

function bandWidth(bits) {
	var unit = 1000;
	if (bits < unit) return (bits % 1 === 0 ? bits : bits.toFixed(2)) + "B";
	var exp =  parseInt(Math.log(bits) / Math.log(unit));
	var pre = "KMGTPE"[exp-1] + 'bps';
	var n = bits / Math.pow(unit, exp);
	return (n % 1 === 0 ? n : n.toFixed(2))+pre;
}