| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../resources/runner.js"></script> |
| <script src="resources/utils.js"></script> |
| </head> |
| <body> |
| </body> |
| <script> |
| createRegularDOMTree(); |
| var allElements = document.body.getElementsByTagName("div"); |
| for (var i = 0; i < allElements.length; ++i) { |
| allElements[i].dataset.test = "foo"; |
| } |
| |
| PerfTestRunner.measureTime({ |
| description: "Measures the performance of a qualified data attribute selector.", |
| run: function() { |
| var rule = applyCSSRule("div[data-test] { color: red; }"); |
| forceStyleRecalc(document.body); |
| rule.remove(); |
| forceStyleRecalc(document.body); |
| }, |
| tracingCategories: 'blink', |
| traceEventsToMeasure: [ |
| 'Document::updateStyle', |
| 'Document::recalcStyle', |
| 'Document::rebuildLayoutTree' |
| ] |
| }); |
| </script> |
| </html> |
