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Created September 10, 2020 19:40
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index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Object vs Map</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;
suite.add("const map = new Map();", function () {
const map = new Map();
for(let i = 0; i < 20; i++) {
map.set(i, Object.create(null));
}
const arr1 = [ ...map.keys() ];
map.delete(1);
map.delete(5);
map.delete(7);
const arr2 = [ ...map.keys() ];
});
suite.add("const obj = Object.create(null);", function () {
const obj = Object.create(null);
for(let i = 0; i < 20; i++) {
obj[i] = Object.create(null);
}
const arr1 = Object.keys(obj).filter((k) => obj[k]);
obj[1] = false;
obj[5] = false;
obj[7] = false;
const arr2 = Object.keys(obj).filter((k) => obj[k]);
});
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 vs Map");
console.log(new Array(30).join("-"));
suite.run();
});
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