third_party/WebKit/PerformanceTests/Editing/move-up-with-hidden-elements.html - Issue 2899793003: Move PerformanceTests/Editing/move-up-with-hidden-elements.html to DOM/

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Side by Side Diff: third_party/WebKit/PerformanceTests/Editing/move-up-with-hidden-elements.html

Issue 2899793003: Move PerformanceTests/Editing/move-up-with-hidden-elements.html to DOM/ (Closed)

Patch Set: Created 3 years, 7 months ago

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	(Empty)
1 <!doctype html>

2 <script src="../resources/runner.js"></script>

3 <div id="sample"></div>

4 <script>

5 const kElements = 10000;

6

7 const metaElements = (() => {

8 const result = [];

9 for (let count = 0; count < kElements; ++count)

10 result.push('<meta>', '</meta>');

11 return result;

12 })();

13 const sample = document.getElementById('sample');

14 sample.innerHTML = [

15 '<h1 id="before">first line of renderered text</h1>',

16 '<div hidden>', ...metaElements, '</div>',

17 '<h1 id="target">second line of renderered text</h1>',

18 '<div hidden>', ...metaElements, '</div>',

19 '<h1 id="after">third line of renderered text</h1>',

20 ].join('');

21

22 const selection = window.getSelection();

23

24 PerfTestRunner.measureTime({

25 description: 'Measures performance of move-up through non-renderered elements' ,

26 setup: () => {

27 selection.removeAllRanges();

28 const target = document.getElementById('target');

29 selection.collapse(target.firstChild, 5);

30 selection.extend(target.firstChild, 10);

31 },

32 run: () => {

33 selection.modify('extend', 'backward', 'line');

34 },

35 });

36 </script>

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