test_bug1457051.html (1165B)
1 <!DOCTYPE HTML> 2 <html> 3 <!-- 4 https://bugzilla.mozilla.org/show_bug.cgi?id=1457051 5 --> 6 <head> 7 <meta charset="utf-8"> 8 <title>Test for Bug 1457051</title> 9 <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script> 10 <link rel="stylesheet" type="text/css" href="chrome://global/skin"/> 11 <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/> 12 <script type="application/javascript"> 13 14 /** Test for Bug 1457051 */ 15 ok(Element.isInstance(document.documentElement), "Basic isInstance works"); 16 ok(!Element.isInstance(null), 17 "Passing null should return false without throwing"); 18 ok(!Element.isInstance(5), "Passing 5 should return false without throwing"); 19 var obj = Object.create(Element.prototype); 20 ok(obj instanceof Element, "instanceof should walk the proto chain"); 21 ok(!Element.isInstance(obj), "isInstance should be a pure brand check"); 22 23 </script> 24 </head> 25 <body> 26 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1457051">Mozilla Bug 1457051</a> 27 <p id="display"></p> 28 <div id="content" style="display: none"> 29 30 </div> 31 <pre id="test"> 32 </pre> 33 </body> 34 </html>