4 var start
= Date
.now();
5 window
._testing_js_start
= Date
.now();
6 window
['_testing_js_after_' + document
.readyState
] = start
;
7 document
.addEventListener('DOMContentLoaded',
9 window
._testing_evt_DOMContentLoaded
= Date
.now();
11 document
.addEventListener('readystatechange', function(){
12 window
['_testing_evt_DOM_' + document
.readyState
] = Date
.now();
14 function recordLoad() {
15 window
._testing_evt_load
= Date
.now();
19 <body onload=
"recordLoad()">This document collects time
20 for events related to the page load progress.
</body>