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1 <!doctype html> | |
2 <script src="../resources/runner.js"></script> | |
3 <textarea id="text" style="width:300px; height:300px" spellcheck="false"></texta
rea> | |
4 <script> | |
5 const kCount = 10; | |
6 const kLines = 20000 | |
7 | |
8 text.textContent = (() => { | |
9 const result = []; | |
10 for (let count = 0; count < kLines; ++count) | |
11 result.push(`${('00000' + count).slice(-5)} of brown foxes\n`); | |
12 return result.join(''); | |
13 })(); | |
14 text.focus(); | |
15 | |
16 PerfTestRunner.measureRunsPerSecond({ | |
17 description: 'Measures performance of move-page-up on many lines', | |
18 run: () => { | |
19 const cursorIndex = text.value.length - 1; | |
20 text.setSelectionRange(cursorIndex, cursorIndex); | |
21 for (let counter = 0; counter < kCount; ++counter) | |
22 testRunner.execCommand("MovePageUp"); | |
23 }, | |
24 }); | |
25 </script> | |
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