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November 2, 2018 06:14
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arguments object perf (https://jsbench.github.io/#3524829555f66e78279803d9d7d87ed1) #jsbench #jsperf
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"/> | |
<title>arguments object perf</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; | |
Benchmark.prototype.setup = function () { | |
const n = 1000 | |
const fn1 = ({id, label}) => ({id, label}) | |
const fn2 = props => ({id: props.id, label: props.label}) | |
const fn3 = (id, label) => ({id, label}) | |
}; | |
suite.add("let i = n", function () { | |
let i = n | |
while(i--) { | |
fn1({id: 1, label: 'lol'}) | |
} | |
}); | |
suite.add("let i = n", function () { | |
let i = n | |
while(i--) { | |
fn2({id: 1, label: 'lol'}) | |
} | |
}); | |
suite.add("let i = n", function () { | |
let i = n | |
while(i--) { | |
fn2(1, 'lol') | |
} | |
}); | |
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("arguments object perf"); | |
console.log(new Array(30).join("-")); | |
suite.run(); | |
}); |
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