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Moonchild
37 lines
1.4 KiB
HTML
37 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<title>window.performance.now exists</title>
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<link rel="author" title="W3C" href="http://www.w3.org/" />
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<link rel="help" href="http://www.w3.org/TR/hr-time/#sec-extenstions-performance-interface"/>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<link rel="stylesheet" href="/resources/testharness.css" />
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<script>
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test(function() {
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assert_equals(typeof window.performance, "object");
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}, "window.performance is defined", {assert: "The window.performance attribute provides a hosting area for performance related attributes."});
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test(function() {
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assert_not_equals(window.performance.now, undefined, 'window.performance.now is defined');
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}, "High Resolution Time extension to the Performance interface", {assert: "window.performance.now exists"});
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test(function() {
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assert_equals(typeof window.performance.now, "function", "window.performance.now is a function");
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}, "window.performance.now() function", {assert: "window.performance.now is a function"});
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test(function() {
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assert_equals(typeof window.performance.now(), "number", "window.performance.now() returns a number");
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}, "window.performance.now() returns a number", {assert: "The now method MUST return a DOMHighResTimeStamp"});
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</script>
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</head>
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<body>
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<h1>Description</h1>
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<p>This test validates that window.performance.now() exist and is a function.</p>
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<div id="log"></div>
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</body>
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</html>
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