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Last active June 8, 2022 20:13
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Array#indexOf vs. Array#includes (http://jsbench.github.io/#0c02e5ebe25ee0374e3736f3289e922a) #jsbench #jsperf
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Array#indexOf vs. Array#includes</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>
"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 () {
var maxLength = 1e3;
var array = Array.from({length: maxLength}).map(function (_, i) {
return i % 100 ? NaN : Math.random();
});
var results = [];
var resolve = function (res) {
results.push(res);
};
var getRandomItem = function () {
var rnd = Math.random();
return rnd > .5 ? array[Math.random() * maxLength | 0] : rnd;
};
const randItem = getRandomItem
};
Benchmark.prototype.teardown = function () {
if (results.length < 1) {
throw 'FAIL';
}
};
suite.add("Array#indexOf", function () {
/** Array#indexOf **/
resolve(array.indexOf(randItem) !== -1);
});
suite.add("Array#includes", function () {
/** Array#includes **/
resolve(array.includes(randItem));
});
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#indexOf vs. Array#includes");
console.log(new Array(30).join("-"));
suite.run();
});
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