<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=664916 --> <head> <title>Test for Bug 664916</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=664916">Mozilla Bug 664916</a> <p id="display"></p> <div id="content" style="display: none"> </div> <pre id="test"> <script type="application/javascript"> /** Test for Bug 664916 **/ var div = document.createElement("div"); var textNode = document.createTextNode("x") var tagNameGetter = div.__lookupGetter__("tagName"); var tagName = ""; try { tagName = tagNameGetter.call(textNode); ok(false, "Should throw when calling tagname getter on text node"); } catch(e) { ok(true, "Should throw when calling tagname getter on text node"); } is(tagName, "", "Should not have changed tagName yet"); tagName = tagNameGetter.call(div); is(tagName, "DIV", "Should get the right tag name"); </script> </pre> </body> </html>