File: window-screen-height-immutable.html

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<!DOCTYPE html>
<html>
<head>
    <title>CSSOM View - 4.2 - screen.height immutability</title>
    <link rel="author" title="Neils Christoffersen" href="mailto:neils.christoffersen@gmail.com">
    <link rel="help" href="http://www.w3.org/TR/cssom-view/#the-screen-interface">
    <meta name="flags" content="dom">
    <meta name="assert" content="screen.height is immutable">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
</head>
<body>
    <div id="myDiv"></div>
    <div id="log"></div>
    <script>
        var originalVal = window.screen.height;

        // try to set window.screen.height
        window.screen.height = 0;

        // verify window.screen.height didn't change
        test(function() {
            assert_equals(window.screen.height, originalVal, "window.screen.height should be immutable")
        }, "immutability test");
    </script>
</body>
</html>