Console Time.js

/*

The console.time functionality can be used for measuring performance of JavaScript functions (outputing processing times to the developer console window)

https://developer.mozilla.org/en-US/docs/Web/API/Console/time
*/

// console.time implementation for IE
if ( window.console && typeof ( window.console.time ) == "undefined") {
	console.time = function (name, reset) {
		if (!name) {
			return;
		}

		var time = new Date().getTime();

		if (!console.timeCounters) {
			console.timeCounters = {};
		}

		var key = "KEY" + name.toString();
		if (!reset && console.timeCounters[key]) {
			return;
		}

		console.timeCounters[key] = time;
	};

	console.timeEnd = function (name) {
		var time = new Date().getTime();

		if (!console.timeCounters) {
			return;
		}

		var key = "KEY" + name.toString();
		var timeCounter = console.timeCounters[key];
		var diff;

		if (timeCounter) {
			diff = time - timeCounter;
			var label = name + ": " + diff + "ms";

			console.info(label);

			delete console.timeCounters[key];
		}

		return diff;
	};
}

/*
Example usage of console.time
*/
function MyFunctionName () {
		console.time('MyFunctionName');
		
		//... do what you need to do
		
		console.timeEnd('MyFunctionName');
}