<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=738108 --> <head> <meta charset="utf-8"> <title>Test for Bug 738108</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=738108">Mozilla Bug 738108</a> <p id="display"></p> <div id="content" style="display: none"> <div id="foo"></div> </div> <pre id="test"> <script type="application/javascript"> /** Test for Bug 738108 **/ is(document.querySelector("#foo"), $("foo"), "querySelector on document should find element by id") is($("content").querySelector("#foo"), $("foo"), "querySelector on parent element should find element by id") is($("foo").querySelector("#foo"), null, "querySelector on element should not find the element itself by id") is(document.querySelectorAll("#foo").length, 1, "querySelectorAll on document should find element by id") is($("content").querySelectorAll("#foo").length, 1, "querySelectorAll on parent element should find element by id") is($("foo").querySelectorAll("#foo").length, 0, "querySelectorall on element should not find the element itself by id") </script> </pre> </body> </html>