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Last active December 8, 2016 22:05
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Array Initialization Tests #jsbench #jsperf (http://jsbench.github.io/#1c61c959206599ac435b9abb26e09a34) #jsbench #jsperf
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Array Initialization Tests #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>
Raw
suite.js
"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 createReusableArray(size) {
var array = new Array(size);
array.virtualLength = 0;
array.innerPush = array.push;
array.push = function (v) {
array[array.virtualLength++] = v;
return v;
}
array.clear = function () {
array.virtualLength = 0;
}
return array;
}
reusableArray = createReusableArray(1000);
};
suite.add("push", function () {
// push
var a = [];
var i = 1000;
while (i-- > 0) a.push(0);
});
suite.add("set size previously", function () {
// set size previously
var a = new Array(1000);
var i = 0;
while (i < 1000) a[i++] = 0;
});
suite.add("set size previously", function () {
// set size previously
var a = new Array(1000);
var i = 1000;
while (i > -1) a[--i] = 0;
});
suite.add("set size previously", function () {
// set size previously
var a = new Array(1000);
var i = 999;
while (i >= 0) a[i--] = 0;
});
suite.add("set size previously", function () {
// set size previously
var a = new Array(1000);
a.length = 0;
var i = 999;
while (i >= 0) a[i--] = 0;
});
suite.add("set size previously", function () {
// set size previously
var a = new Array(1000);
a.length = 0;
var i = 999;
while (i-- >= 0) a.push(0);
});
suite.add("set size previously", function () {
// set size previously
var a = new Array(1000);
a.length = 0;
var i = 0;
while (i < 1000) a[i++] = 0;
});
suite.add("set size previously", function () {
// set size previously
var a = [];
a.length = 1000;
var i = 0;
while (i < 1000) a[i++] = 0;
});
suite.add("set size previously", function () {
// set size previously
reusableArray.clear();
var a = reusableArray;
var i = 0;
while (i++ < 1000) a.push(0);
});
suite.add("set size previously", function () {
// set size previously
reusableArray.clear();
var a = reusableArray;
var i = 0;
while (i < 1000) a[i++] = 0;
});
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("Array Initialization Tests #jsbench #jsperf");
console.log(new Array(30).join("-"));
suite.run();
});
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