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Object structure #jsbench #jsperf (https://jsbench.github.io/#4354da02fb0e22ca7ff344a77af5e7e9) #jsbench #jsperf
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"/> | |
| <title>Object structure #jsbench #jsperf</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; | |
| Benchmark.prototype.setup = function () { | |
| function createObj1(x) { | |
| if (x === undefined) { | |
| var obj = {}; | |
| obj.a = 1; | |
| return obj; | |
| } | |
| return {}; | |
| } | |
| function createObj2(x) { | |
| return { | |
| a: x === undefined ? undefined : 1 | |
| }; | |
| } | |
| }; | |
| suite.add("var arr = [];", function () { | |
| var arr = []; | |
| for (var i = 0; i < 100; i++) { | |
| arr.push(createObj1(i & 1 ? i : undefined)); | |
| } | |
| arr.splice(20, 60); | |
| var count = 0; | |
| for (var i = 0; i < 40; i++) { | |
| if (arr[i].a !== undefined) { | |
| count++; | |
| } | |
| } | |
| }); | |
| suite.add("var arr = [];", function () { | |
| var arr = []; | |
| for (var i = 0; i < 100; i++) { | |
| arr.push(createObj2(i & 1 ? i : undefined)); | |
| } | |
| arr.splice(20, 60); | |
| var count = 0; | |
| for (var i = 0; i < 10; i++) { | |
| if (arr[i].a !== undefined) { | |
| count++; | |
| } | |
| } | |
| }); | |
| 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("Object structure #jsbench #jsperf"); | |
| console.log(new Array(30).join("-")); | |
| suite.run(); | |
| }); |
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