| <!DOCTYPE html> |
| <title>document.writeln 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-document-writeln%28%29"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#documents-in-the-dom"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="log"></div> |
| <script> |
| test(function() { |
| var iframe = document.createElement("iframe"); |
| document.body.appendChild(iframe); |
| doc = iframe.contentDocument; |
| test(function() { |
| doc.open(); |
| doc.writeln(null); |
| doc.close(); |
| assert_equals(doc.documentElement.textContent, "null\n"); |
| }, "document.writeln(null)"); |
| test(function() { |
| doc.open(); |
| doc.writeln(undefined); |
| doc.close(); |
| assert_equals(doc.documentElement.textContent, "undefined\n"); |
| }, "document.writeln(undefined)"); |
| }, "Calling document.writeln with null and undefined"); |
| </script> |
