| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="../resources/runner.js"></script> |
| <script> |
| function buildTree() |
| { |
| wrapper = document.createElement("div"); |
| for (i = 0; i < 1000; ++i) { |
| var child = document.createElement("div"); |
| for (j = 0; j < 1000; ++j) { |
| var grandChild = document.createElement("div"); |
| child.appendChild(grandChild); |
| } |
| wrapper.appendChild(child); |
| } |
| document.body.appendChild(wrapper); |
| } |
| |
| function setup() { |
| wrapper.style.display = "block"; |
| // Force a layout so that everything is up-to-date. |
| wrapper.offsetTop; |
| } |
| |
| function runTest() { |
| setup(); |
| |
| var now = PerfTestRunner.now(); |
| |
| wrapper.style.display = "none"; |
| wrapper.offsetTop; |
| |
| return PerfTestRunner.now() - now; |
| } |
| |
| buildTree(); |
| |
| PerfTestRunner.measureTime({run: runTest, description: "This benchmark checks the time spend in detaching an tree." }); |
| </script> |
| </body> |
| </html> |
