| <!DOCTYPE html> |
| <head> |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| onload = function() { |
| // Make documentElement to P element without HTML and BODY. |
| var htmlElement = document.documentElement; |
| var target = document.getElementById('target'); |
| document.replaceChild(target, htmlElement); |
| |
| document.designMode = 'on'; |
| window.getSelection().collapse(target, 0); |
| document.execCommand('InsertHTML', false, '<pre></pre>'); |
| |
| // Here, document.documentElement is null. |
| document.write('Pass if not crash.'); |
| }; |
| </script> |
| </head> |
| <body> |
| <p id="target"></p> |
| </body> |
| </html> |
