blob: 6b1661846126bc200d54075f8a36c4460cd9ee01 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
<!DOCTYPE html>
<html>
<head>
<title>Dataset - element.dataset is an instance of DOMStringMap</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<h1>Dataset - element.dataset is an instance of DOMStringMap</h1>
<div id="log"></div>
<script>
test(function() { assert_true(document.createElement("div").dataset instanceof window.DOMStringMap); },
"An elements dataset property is an instance of a DOMStringMap");
test(function() {
var dataset = document.createElement("div").dataset;
assert_true("toString" in dataset, '"toString" in dataset');
assert_equals(dataset.toString, Object.prototype.toString);
assert_false("expando" in dataset, '"expando" in dataset');
assert_equals(dataset.expando, undefined);
Object.prototype.expando = 42;
assert_true("expando" in dataset, '"expando" in dataset');
assert_equals(dataset.expando, 42);
}, "Properties on Object.prototype should shine through.");
</script>
</body>
</html>
|
