html - Javascript: Page load time -

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how calculate time takes load page , display it? using snippet got online , modified display preference. there better way calculate time takes page load?

note: ladezeit date time in german.

<!--begin_loadtime--> <script type="text/javascript">  ladestart = new date();  function ladezeit() {  current = new date();  dtime = current.gettime() - ladestart.gettime();  loadtime = dtime/1000 +" seconds page load time.";  document.getelementbyid("ladezeit-anzeige").innerhtml = loadtime; }  </script> <body onload="ladezeit()"> <div id="ladezeit-anzeige" style="position: absolute;  top: 5px; left: 10px;"></div> <!--end_loadtime-->

page load speed depends on many factors, includes time takes load external files, such css, js, images, , etc , how fast webserver responds. using on page javascript commands detect page load speed flawed doesn't count how fast server responds , etc.

to check how fast page load, might use tools, such https://developers.google.com/speed/pagespeed/.


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