зеркало из https://github.com/mozilla/gecko-dev.git
69 строки
2.2 KiB
HTML
69 строки
2.2 KiB
HTML
<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=1268195
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-->
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<head>
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<meta charset="utf-8">
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<title>Test for Bug 1268195</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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<style>
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html, body {
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margin: 0;
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padding: 0;
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}
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.noscroll {
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overflow: hidden;
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height: 100%;
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}
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/* Toggling this on and off triggers a frame reconstruction on the <body> */
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html.reconstruct-body::before {
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top: 0;
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content: '';
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display: block;
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height: 2px;
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position: absolute;
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width: 100%;
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z-index: 99;
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}
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</style>
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<script type="application/javascript">
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SimpleTest.waitForExplicitFinish();
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function run() {
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// Make sure we have the right scroll element
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SimpleTest.is(document.body.scrollTopMax > 0, true, "Body is the scrolling element");
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// Scroll to the bottom
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document.body.scrollTop = document.body.scrollTopMax;
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SimpleTest.is(document.body.scrollTop > 0, true, "Scrolled body");
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// Do a frame reconstruction on the body while also shortening the
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// height.
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document.body.classList.toggle('noscroll');
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document.documentElement.classList.toggle('reconstruct-body');
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document.getElementById('spacer').style.height = '1px';
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SimpleTest.is(document.body.scrollTop, 0, "Scroll forced to top");
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// Do another frame reconstruction while lengthening the height again.
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document.body.classList.toggle('noscroll');
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document.documentElement.classList.toggle('reconstruct-body');
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document.getElementById('spacer').style.height = '5000px';
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SimpleTest.is(document.body.scrollTop, 0, "Scroll remained at top");
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SimpleTest.finish();
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}
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</script>
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</head>
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<body onload="setTimeout(run, 0)">
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1268195">Mozilla Bug 1268195</a><br/>
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The scroll position should end the top of the page. This is the top, yay!
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<div id="spacer" style="height: 5000px"></div>
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The scroll position should end the top of the page. This is the bottom!
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<pre id="test">
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</pre>
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</body>
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</html>
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