Javascript : Find script execution time

Using the script below you can find how much time it took to execute your javascript code.

var startDate = new Date();

// execute your tasks here

var endDate = new Date();

var timeTaken = endDate.getTime() - startDate.getTime();

alert('Time take to execute the script is '+timeTaken+' milliseconds');

You can try this example

// USE OF THIS FUNCTION IS NOT RECOMMENDED, CONSUMES LOT OF SYSTEM RESOURCES
function sleep(milliSeconds){
	var startTime = new Date().getTime(); // get the current time
	while (new Date().getTime() < startTime + milliSeconds); // hog cpu
}

var startDate = new Date();

// execute your tasks here
sleep(300); // parameter is milliseconds

var endDate = new Date();
var timeTaken = endDate.getTime() - startDate.getTime();

alert('Time take to execute the script is '+timeTaken+' milliseconds');

sleep function taken from http://www.devcheater.com/#JavaScript sleep by loop. Usage of this sleep function is not recommended, shown only for demo purpose.

Check PHP version here