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Loop Performance 2 .jsbench (https://jsbench.github.io/#e86c06909d7eedd18f8b9bac101e9d6d) #jsbench #jsperf
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Loop Performance 2 .jsbench</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 OwnForEach(arr, cb) {
for (var len = arr.length, idx = 0; idx < len; idx++) { cb(arr[idx], idx, arr); }
}
var staticForEach = Function.prototype.call.bind(Array.prototype.forEach);
function shuffleArrayOfArrays(array) {
var end = array.length;
do {
for (var i = end - 1; i > 0; i--) {
var j = Math.floor(Math.random() * (i + 1));
var temp = array[i];
array[i] = array[j];
array[j] = temp;
}
var keepGoing = array[0].length === 0 || array[end-1].length === 0 || array[0].length === array[end-1].length;
for (var i = 0, len = end - 1; i < len && keepGoing===false; i++) {
keepGoing = array[i].length === array[i+1].length;
}
} while (keepGoing);
return array;
}
var srcTestingData = ((generateTestData)=>{
var data = window.testSourceData;
if (!data) {
data = generateTestData();
window.testSourceData = data;
}
return data;
})(()=>{
const testArrays = [];
for(var multis = [1, 3, 7, 13, 23, 31, 43, 67, 89, 269, 569], spacers = [0,1,2,3,5,7], iM=0; iM < multis.length; iM++) {
for(var iS=0; iS < spacers.length; iS++) {
let testArray = []
for(var count = multis[iM]*spacers[iS]; count > 0; count--) {
var rando = (((1.2*Math.random())-Math.random()) * Math.pow(10,5))|0;
testArray.push(rando);
}
testArrays.push(testArray);
}
}
shuffleArrayOfArrays(testArrays);
var correctSums = testArrays.map(testArray => {
var sum = 0;
for(var i =0; i< testArray.length; i++) {
sum = sum + testArray[i];
}
return sum;
});
Object.defineProperty(testArrays, 'correctSums', { enumerable: false, writable: false, value: correctSums });
return testArrays;
});
};
suite.add("Native forEach Arrow", function () {
//Native forEach Arrow
srcTestingData.forEach((testArray, testIdx, data) => {
let sum = 0;
testArray.forEach(value=> sum+=value);
if (data.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
});
});
suite.add("Native forEach func", function () {
//Native forEach func
srcTestingData.forEach(function (testArray, testIdx) {
let sum = 0;
testArray.forEach(function (value) {
sum+=value;
});
if (this.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
}, srcTestingData);
});
suite.add("Own ForEach", function () {
//Own ForEach
let forEach = OwnForEach;
forEach(srcTestingData, (testArray, testIdx, data) => {
let sum = 0;
forEach(testArray, value=> sum+=value);
if (data.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
});
});
suite.add("for...of", function () {
//for...of
const data = srcTestingData;
let testIdx = 0;
for(let testArray of data) {
let sum = 0;
for(let value of testArray) {
sum+=value;
}
if (data.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
testIdx++;
}
});
suite.add("for loop", function () {
//for loop
const data = srcTestingData;
for(let testIdx = 0; testIdx < data.length; testIdx++) {
const testArray = data[testIdx];
let sum = 0;
for(let i = 0; i < testArray.length; i++) {
let value = testArray[i];
sum+=value;
}
if (data.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
}
});
suite.add("for loop (optimized)", function () {
//for loop (optimized)
for(let data = srcTestingData, testLen = data.length, testIdx = 0, sum, testArray, i, len; testIdx < testLen; testIdx++) {
for(sum=0, len = (testArray=data[testIdx]).length, i = 0; i < len; i++) {
sum+=testArray[i];
}
if (data.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
}
});
suite.add("Array.prototype.forEach.call", function () {
//Array.prototype.forEach.call
const forEach = Array.prototype.forEach;
forEach.call(srcTestingData, (testArray, testIdx, data) => {
let sum = 0;
forEach.call(testArray, value=> sum+=value);
if (data.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
});
});
suite.add("call.bind(Array.prototype.forEach)", function () {
//call.bind(Array.prototype.forEach)
const forEach = Function.prototype.call.bind(Array.prototype.forEach);
forEach(srcTestingData, (testArray, testIdx, data) => {
let sum = 0;
forEach(testArray, value=> sum+=value);
if (data.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
});
});
suite.add("static call.bind", function () {
//static call.bind
const forEach = staticForEach;
forEach(srcTestingData, (testArray, testIdx, data) => {
let sum = 0;
forEach(testArray, value=> sum+=value);
if (data.correctSums[testIdx] !== sum) { throw Error(`${testIdx}\n${sum}\n${data.correctSums[testIdx]}`); }
});
});
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("Loop Performance 2 .jsbench");
console.log(new Array(30).join("-"));
suite.run();
});
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