PerformanceTests/DOM/TraverseChildNodes.html - Issue 478003002: Fill in descriptions on relevant blink_perf tests

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Side by Side Diff: PerformanceTests/DOM/TraverseChildNodes.html

Issue 478003002: Fill in descriptions on relevant blink_perf tests (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: alancutter nits Created 6 years, 2 months ago

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1 <!DOCTYPE html>	1 <!DOCTYPE html>

2 <html>	2 <html>

3 <body>	3 <body>

4 <script src="../resources/runner.js"></script>	4 <script src="../resources/runner.js"></script>

5 <script>	5 <script>

6 var spec = PerfTestRunner.loadFile("../Parser/resources/html5.html");	6 var spec = PerfTestRunner.loadFile("../Parser/resources/html5.html");

7 var iframe;	7 var iframe;

8	8

9 PerfTestRunner.measureTime({	9 PerfTestRunner.measureTime({

	10 description: "Measures performance of traversing through a large HTML docume nt using elem.childNodes.",

10 setup: function () {	11 setup: function () {

11 if (iframe)	12 if (iframe)

12 document.body.removeChild(iframe);	13 document.body.removeChild(iframe);

13 iframe = document.createElement("iframe");	14 iframe = document.createElement("iframe");

14 iframe.style.display = "none"; // Prevent creation of the rendering tre e, so we only test HTML parsing.	15 iframe.style.display = "none"; // Prevent creation of the rendering tre e, so we only test HTML parsing.

15 iframe.sandbox = ''; // Prevent external script loads which could cause write() to return before completing the parse.	16 iframe.sandbox = ''; // Prevent external script loads which could cause write() to return before completing the parse.

16 document.body.appendChild(iframe);	17 document.body.appendChild(iframe);

17 iframe.contentDocument.open();	18 iframe.contentDocument.open();

18 iframe.contentDocument.write(spec);	19 iframe.contentDocument.write(spec);

19 iframe.contentDocument.close();	20 iframe.contentDocument.close();

20 },	21 },

21 run: function() {	22 run: function() {

22 var elements = iframe.contentDocument.getElementsByTagName('*');	23 var elements = iframe.contentDocument.getElementsByTagName('*');

23 for (var i = 0; i < elements.length; i++) {	24 for (var i = 0; i < elements.length; i++) {

24 for (var j = 0; j < elements[i].childNodes.length; j++)	25 for (var j = 0; j < elements[i].childNodes.length; j++)

25 elements[i].childNodes[j];	26 elements[i].childNodes[j];

26 }	27 }

27 },	28 },

28 done: function () { document.body.removeChild(iframe); }});	29 done: function () { document.body.removeChild(iframe); }});

29	30

30 </script>	31 </script>

31 </body>	32 </body>

32 </html>	33 </html>

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