Page load time with JavaScript

Question

I am looking for a proper way to test the time it takes a page to fully load all its resources. What I\'ve done so far is add:

window.startTime = (new Date).         


        

Answer 1

It is pretty much the only way in legacy browsers to measure times. But for the rescue, most browsers do implement the window.performance object which offers a very, very accurate way of getting times.

A typical window.performance.timing output:

connectEnd 1351036536696
connectStart 1351036536696
domComplete 1351036538277
domContentLoadedEventEnd 1351036538146
domContentLoadedEventStart 1351036538119
domInteractive 1351036538042
domLoading 1351036537552
domainLookupEnd 1351036536694
domainLookupStart 1351036536694
fetchStart 1351036536696
loadEventEnd 1351036538295
loadEventStart 1351036538277
navigationStart 1351036536696

..which is not even the full list.