| <!doctype html> |
| <title>getElementsByClassName and null/undefined</title> |
| <link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-getelementsbyclassname"> |
| <link rel="stylesheet" href="/resources/testharness.css"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="log"></div> |
| <div id="test"> |
| <p id="p1"></p> |
| <p class="undefined" id="p2"></p> |
| <p class="null" id="p3"></p> |
| <p class="undefined null" id="p4"></p> |
| </div> |
| <script> |
| test(function() { |
| var wrapper = document.getElementById("test"); |
| assert_equals(document.getElementsByClassName(undefined).length, 2); |
| assert_equals(document.getElementsByClassName(undefined)[0], |
| document.getElementById("p2")); |
| assert_equals(document.getElementsByClassName(undefined)[1], |
| document.getElementById("p4")); |
| /* |
| assert_equals(document.getElementsByClassName(null).length, 2); |
| assert_equals(document.getElementsByClassName(null)[0], |
| document.getElementById("p3")); |
| assert_equals(document.getElementsByClassName(null)[1], |
| document.getElementById("p4")); |
| */ |
| }); |
| </script> |