File: cssom-getBoundingClientRect-001.html

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<!DOCTYPE html>
<html>
<head>
    <title>CSSOM View - 6.1 - getBoundingClientRect tests</title>
    <meta charset="utf-8">
    <link rel="author" title="Chris Wu" href="mailto:pwx.frontend@gmail.com">
    <link rel="help" href="http://www.w3.org/TR/cssom-view/#dom-element-getboundingclientrect">
    <meta name="flags" content="dom">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <style type="text/css">
        #testItem {
            width: 279px;
            height: 188px;
            margin: 100px 0 0 178px;
            background-color: purple;
            font-size: 26px;
            font-weight: bold;
            text-align: center;
            line-height: 188px;
        }
    </style>
</head>
<body>
    <div id="testItem">test item</div>
    <div id="log"></div>
    <script>
        var titem = document.getElementById('testItem').getBoundingClientRect();
        test(
            function(){
                assert_equals(titem.bottom - titem.top, titem.height, "height should equal bottom minus top")
            }, "getBoundingClientRect() should return a DOMRect where height=bottom-top"
        );
        test(
            function(){
                assert_equals(titem.right - titem.left, titem.width, "width should equal right minus left")
            }, "getBoundingClientRect() should return a DOMRect where width=right-left"
        )
    </script>
</body>
</html>