A simple stopwatch script

stopwatch.js

var total = 0;
var startMoment = 0;
var timingInterval = null;

var displayTime = function (current) {
	// console.log(current + total);
}

// start or continue
var startTiming = function () {
	startMoment = (new Date()).getTime();
	timingInterval = setInterval(function () {
		displayTime((new Date()).getTime() - startMoment);
	}, 10);
}

// stop or pause
var stopTiming = function () {
	clearInterval(timingInterval);
	total += (new Date()).getTime() - startMoment;
}