diff options
| author | initial.commit <initial.commit@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-07-27 00:20:51 +0000 |
|---|---|---|
| committer | initial.commit <initial.commit@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-07-27 00:20:51 +0000 |
| commit | f5b16fed647e941aa66933178da85db2860d639b (patch) | |
| tree | f00e9856c04aad3b558a140955e7674add33f051 /webkit/data/test_shell/js | |
| parent | 920c091ac3ee15079194c82ae8a7a18215f3f23c (diff) | |
| download | chromium_src-f5b16fed647e941aa66933178da85db2860d639b.zip chromium_src-f5b16fed647e941aa66933178da85db2860d639b.tar.gz chromium_src-f5b16fed647e941aa66933178da85db2860d639b.tar.bz2 | |
Add webkit to the repository.
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@18 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'webkit/data/test_shell/js')
| -rw-r--r-- | webkit/data/test_shell/js/timers.html | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/webkit/data/test_shell/js/timers.html b/webkit/data/test_shell/js/timers.html new file mode 100644 index 0000000..2841e2f --- /dev/null +++ b/webkit/data/test_shell/js/timers.html @@ -0,0 +1,61 @@ +<html> +<head> +<script language="javascript"> +var last = new Date(); // The last time we sampled the timer +var total_value = 0; // The sum of the intervals measured +var total_count = 0; // The count of the intervals measured +var last_interval = 1; +function fire() { + + var current = new Date(); + var ms = current - last; + + total_value += ms; + total_count++; + + // Display the interval output. + var output = document.getElementById('output'); + output.innerHTML = ms + "ms"; + + // Display the average output. + var average = document.getElementById('average'); + average.innerHTML = total_value / total_count + "ms"; + + // Get the new interval from the input. + var input = document.getElementById('input'); + + // If the interval has changed, reset our averages. + if (input.value != last_interval) { + total_value = 0; + total_count = 0; + } + last_interval = input.value; + + last = new Date(); + setTimeout(fire, last_interval); +} +</script> +</head> + +<body onload='setTimeout("fire()", 1)'> + +<h1>Test JS setTimeout() speed</h1> + +This page tests the frequency of setTimeout() in the browser. +Javascript applications use setTimeout() as a mechanism to 'yield' +to the browser so that the browser can repaint. Most browsers +implement a 15ms setTimeout() minimum. Use this to page to measure +setTimeout() lag and discover your browser's minimum interval.<P> + +<hr> + +Desired ms to delay: <input id="input" type="text" value="1"><P> + +Measured delay:<br> +<ul> +instance: <div id="output"></div> +average: <div id="average"></div> +</ul> + +</body> +</html> |