| <!doctype html> |
| <script src="../resources/runner.js"></script> |
| <div id="target">target</div> |
| <div id="sample" style="display: none"></div> |
| <script> |
| var selection = window.getSelection(); |
| selection.selectAllChildren(document.getElementById('target')); |
| var sample = document.getElementById('sample'); |
| for (var index = 0; index < 1000; ++index) { |
| var span = document.createElement('span'); |
| span.textContent = `item ${index}\n`; |
| sample.appendChild(span); |
| } |
| PerfTestRunner.measureTime({ |
| description: 'Measures performance of removeChild() with selection.', |
| |
| run: function() { |
| var copy = sample.cloneNode(true); |
| while (sample.firstChild) |
| sample.removeChild(sample.firstChild); |
| while (copy.firstChild) |
| sample.appendChild(copy.firstChild); |
| }, |
| }); |
| </script> |
