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DOCTYPE HTML>
<
html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1457051
-->
<
head>
<
meta charset=
"utf-8">
<
title>Test for Bug 1457051</
title>
<
script src=
"chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></
script>
<
link rel=
"stylesheet" type=
"text/css" href=
"chrome://global/skin"/>
<
link rel=
"stylesheet" type=
"text/css" href=
"chrome://mochikit/content/tests/SimpleTest/test.css"/>
<
script type=
"application/javascript">
/** Test for Bug 1457051 **/
ok(Element.isInstance(document.documentElement),
"Basic isInstance works");
ok(!Element.isInstance(null),
"Passing null should return false without throwing");
ok(!Element.isInstance(5),
"Passing 5 should return false without throwing");
var obj =
Object.create(Element.prototype);
ok(obj instanceof Element,
"instanceof should walk the proto chain");
ok(!Element.isInstance(obj),
"isInstance should be a pure brand check");
</
script>
</
head>
<
body>
<a target=
"_blank" href=
"https://bugzilla.mozilla.org/show_bug.cgi?id=1457051">Mozil
la Bug 1457051</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
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