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@milahu
Last active Oct 5, 2020
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test if array index exists by value or array length #jsbench #jsperf (http://jsbench.github.io/#8d011d47ee4a1cfda2e94b07ca28d351) #jsbench #jsperf
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>test if array index exists by value or array length #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>
"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 () {
const input_list = Array.from({length: 10000})
.map(_ => Array.from({length: (Math.random()*10)|0}).map((_, idx) => idx*10))
};
suite.add("if value", function () {
// if value
let c = 0;
for (let i = 0; i < input_list.length; i++) {
if (input_list[5]) c++;
}
});
suite.add("if length", function () {
// if length
let c = 0;
for (let i = 0; i < input_list.length; i++) {
if (input_list.length > 5) c++;
}
});
suite.add("", function () {
});
suite.add("", function () {
});
suite.add("", function () {
});
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("test if array index exists by value or array length #jsbench #jsperf");
console.log(new Array(30).join("-"));
suite.run();
});
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