mirror of
https://github.com/roytam1/palemoon27.git
synced 2026-06-09 09:58:57 +00:00
Pale Moon
53 lines
1.5 KiB
HTML
53 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<html><head>
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<meta http-equiv="content-type" content="text/html; charset=windows-1252">
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<script>
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var counter = 0;
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var total = 0;
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// test 1 is with innerText change, test 2 without
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var test = 1;
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var testruns = 500;
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// Keep the innerText results somewhere, trying to make sure jit doesn't
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// optimize out .innerText getter this way.
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var accessCount = 1000;
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var dummyContainer = new Array(accessCount);
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function DOMSpeed() {
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var s = document.getElementById('speed_dom');
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++counter;
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var startTime = new Date();
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for( var i = 0; i <= accessCount; i++) {
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if (test == 1) {
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s.lastChild.data = counter + "/" + testruns + ":" + i;
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}
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dummyContainer[i] = s.innerText;
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}
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var endTime = new Date();
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var time = (endTime - startTime);
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total = total + time;
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var results = document.getElementById('results' + test);
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results.firstChild.data = results.textContent + time + ", " + ((counter % 15 == 0) ? "\n " : "");
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if (counter < testruns) {
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setTimeout(DOMSpeed, 0);
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} else {
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results.firstChild.data = results.textContent + "\ntotal: " + total +
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", avg " + (total/testruns);
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if (++test == 2) {
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s.lastChild.data = "Now testing a case where .innerText can be cached."
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counter = 0;
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total = 0;
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setTimeout(DOMSpeed, 0);
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}
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}
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}
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</script>
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</head>
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<body onload="setTimeout(DOMSpeed, 0)">
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<div id="speed_dom"><b><span> Testing...</span> please wait...</b>0</div>
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<pre id="results1"> </pre>
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<pre id="results2"> </pre>
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</body></html> |