| <!DOCTYPE html> |
| <script src="../resources/runner.js"></script> |
| <div id="target"></div> |
| <script type='text/javascript'> |
| const kElements = 20000; |
| |
| const selection = getSelection(); |
| let range; |
| |
| PerfTestRunner.measureTime({ |
| description: `Measures performance of add a Range in a DOM tree of ${kElements} elements`, |
| setup: () => { |
| const fragments = [] |
| for (let i = 0; i < kElements; ++i) |
| fragments.push(`<span>foo bar baz ${i} </span>`); |
| target.innerHTML = fragments.join(''); |
| |
| range = document.createRange(); |
| range.setStart(target, 0); |
| }, |
| run: () => { |
| selection.removeAllRanges(); |
| selection.addRange(range); |
| }, |
| done: () => { |
| target.innerHTML = ''; |
| } |
| }); |
| </script> |
