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<!DOCTYPE html>
<html>
<head>
<title>Element Custom Attributes</title>
<link rel="author" title="Bruno de Oliveira Abinader" href="mailto:bruno.d@partner.samsung.com">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-dataset">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#xml">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/dom/nodes/attributes.js"></script>
</head>
<body>
<h1>Element Custom Attributes</h1>
<div id="log"></div>
<script>
test(function() {
var div = document.createElement("div");
div.setAttributeNS("foo", "data-my-custom-attr", "first");
div.setAttributeNS("bar", "data-my-custom-attr", "second");
div.dataset.myCustomAttr = "third";
assert_equals(div.attributes.length, 3);
attributes_are(div, [["data-my-custom-attr", "first", "foo"],
["data-my-custom-attr", "second", "bar"],
["data-my-custom-attr", "third", null]]);
}, "Setting an Element's dataset property should not interfere with namespaced attributes with same name");
</script>
</body>
</html>
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