<!DOCTYPE HTML> <html class="A b"> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=395915 --> <head> <title>Test for Bug 395915</title> <script type="text/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=395915">Mozilla Bug 395915</a> <p id="display"></p> <div id="content" style="display: none"> </div> <pre id="test"> <script class="testbody" type="text/javascript"> /** Test for Bug 395915 **/ is(document.getElementsByClassName("a").length, 0, "Class names are case-sensitive"); is(document.getElementsByClassName("A").length, 1, "Have one node of class A"); is(document.getElementsByClassName("A")[0], document.documentElement, "Root is class A"); is(document.getElementsByClassName("a b").length, 0, "Class names are case-sensitive two"); is(document.getElementsByClassName("A B").length, 0, "Class names are case-sensitive three"); is(document.getElementsByClassName("a B").length, 0, "Class names are case-sensitive four"); is(document.getElementsByClassName("A b").length, 1, "Have one node of class 'A b'"); is(document.getElementsByClassName("A b")[0], document.documentElement, "Root is class 'A b'"); </script> </pre> </body> </html>