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July 11, 2017 18:35
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dom walking versus querySelector - 3 (http://jsbench.github.io/#19326344341cbc33122e0e8fbbd21b5a) #jsbench #jsperf
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"/> | |
| <title>dom walking versus querySelector - 3</title> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script> | |
| <script src="./suite.js"></script> | |
| </head> | |
| <body> | |
| <h1>Open the console to view the results</h1> | |
| <h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2> | |
| </body> | |
| </html> |
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| "use strict"; | |
| (function (factory) { | |
| if (typeof Benchmark !== "undefined") { | |
| factory(Benchmark); | |
| } else { | |
| factory(require("benchmark")); | |
| } | |
| })(function (Benchmark) { | |
| var suite = new Benchmark.Suite; | |
| suite.add("(function () {", function () { | |
| (function () { | |
| var a = 0, | |
| b = 0, | |
| c = 0, | |
| tdlen = 0, | |
| tabs = 0, | |
| table = [], | |
| td = [], | |
| tds = [], | |
| list = document.getElementsByTagName("div"), | |
| len = list.length; | |
| do { | |
| table.push(list[a].getElementsByTagName("table")); | |
| a = a + 1; | |
| } while (a < len); | |
| a = 0; | |
| do { | |
| tabs = table[a].length; | |
| if (tabs > 0) { | |
| b = 0; | |
| do { | |
| tds = table[a][b].getElementsByTagName("td"); | |
| if (tds !== null) { | |
| tdlen = tds.length; | |
| c = 0; | |
| do { | |
| td.push(tds[b]); | |
| c = c + 1; | |
| } while (c < tdlen); | |
| } | |
| b = b + 1; | |
| } while (b < tabs); | |
| } | |
| a = a + 1; | |
| } while (a < len); | |
| return td; | |
| }()); | |
| }); | |
| suite.add("document.querySelectorAll(\"div table td\")", function () { | |
| document.querySelectorAll("div table td") | |
| }); | |
| suite.on("cycle", function (evt) { | |
| console.log(" - " + evt.target); | |
| }); | |
| suite.on("complete", function (evt) { | |
| console.log(new Array(30).join("-")); | |
| var results = evt.currentTarget.sort(function (a, b) { | |
| return b.hz - a.hz; | |
| }); | |
| results.forEach(function (item) { | |
| console.log((idx + 1) + ". " + item); | |
| }); | |
| }); | |
| console.log("dom walking versus querySelector - 3"); | |
| console.log(new Array(30).join("-")); | |
| suite.run(); | |
| }); |
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