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@nhunzaker
Created December 10, 2016 15:33
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Object.create vs shallow clone #jsbench #jsperf (http://jsbench.github.io/#ab0f9152b4a3df689cbfe98062adf36e) #jsbench #jsperf
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Object.create vs shallow clone #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;
suite.add("var parent = { a: 'a', b: 'b', c: 'c', d: 'd' }", function () {
var parent = { a: 'a', b: 'b', c: 'c', d: 'd' }
var child = Object.create(parent)
});
suite.add("var parent = { a: 'a', b: 'b', c: 'c', d: 'd' }", function () {
var parent = { a: 'a', b: 'b', c: 'c', d: 'd' }
var child = {}
for (var key in parent) {
if (parent.hasOwnProperty(key)) {
child[key] = parent[key]
}
}
});
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.create vs shallow clone #jsbench #jsperf");
console.log(new Array(30).join("-"));
suite.run();
});
@zhaoshuo88
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写的好棒

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