Compute elapsed time [duplicate]

Question

I am looking for some JavaScript simple samples to compute elapsed time. My scenario is, for a specific point of execution in JavaScript code, I want to record a start time. And at another specific point of execution in JavaScript code, I want to record an end time.

Then, I want to calculate the elapsed time in the form of: how many Days, Hours, Minutes and Seconds are elapsed between end time and start time, for example: 0 Days, 2 Hours, 3 Minutes and 10 Seconds are elapsed.

Any reference simple samples? :-)

Thanks in advance,

George

Answer 1

Try something like this (FIDDLE)

// record start time var startTime = new Date();  ...  // later record end time var endTime = new Date();  // time difference in ms var timeDiff = endTime - startTime;  // strip the ms timeDiff /= 1000;  // get seconds (Original had 'round' which incorrectly counts 0:28, 0:29, 1:30 ... 1:59, 1:0) var seconds = Math.round(timeDiff % 60);  // remove seconds from the date timeDiff = Math.floor(timeDiff / 60);  // get minutes var minutes = Math.round(timeDiff % 60);  // remove minutes from the date timeDiff = Math.floor(timeDiff / 60);  // get hours var hours = Math.round(timeDiff % 24);  // remove hours from the date timeDiff = Math.floor(timeDiff / 24);  // the rest of timeDiff is number of days var days = timeDiff ; 

Answer 2

Try this...

function Test() {     var s1 = new StopWatch();      s1.Start();              // Do something.      s1.Stop();      alert( s1.ElapsedMilliseconds ); }   // Create a stopwatch "class."  StopWatch = function() {     this.StartMilliseconds = 0;     this.ElapsedMilliseconds = 0; }    StopWatch.prototype.Start = function() {     this.StartMilliseconds = new Date().getTime(); }  StopWatch.prototype.Stop = function() {     this.ElapsedMilliseconds = new Date().getTime() - this.StartMilliseconds; }