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January 22, 2017 13:19
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Object Spread Operator VS Object.assign (http://jsbench.github.io/#b97be8f3e8a92f374cc3416ea2fac2b7) #jsbench #jsperf
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"/> | |
<title>Object Spread Operator VS Object.assign</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> |
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"use strict"; | |
(function (factory) { | |
if (typeof Benchmark !== "undefined") { | |
factory(Benchmark); | |
} else { | |
factory(require("benchmark")); | |
} | |
})(function (Benchmark) { | |
var suite = new Benchmark.Suite; | |
suite.add("Object Spread Operator", function () { | |
//Object Spread Operator | |
const o1 = { a: 1, b: 1 }; | |
const o2 = { b: 2 }; | |
const o3 = { a: 3, c: 3 }; | |
const obj = { | |
...o1, | |
...o2, | |
...o3, | |
}; | |
console.log(obj); | |
}); | |
suite.add("Object.assign", function () { | |
// Object.assign | |
const o1 = { a: 1, b: 1 }; | |
const o2 = { b: 2 }; | |
const o3 = { a: 3, c: 3 }; | |
const obj = Object.assign({}, o1, o2, o3); | |
console.log(obj); | |
}); | |
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 Spread Operator VS Object.assign"); | |
console.log(new Array(30).join("-")); | |
suite.run(); | |
}); |
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