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November 15, 2016 09:12
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arguments: Array#slice, Array#apply, Array.from, for and while #jsbench #jsperf (http://jsbench.github.io/#a136e8de79004308d368210d77f3400e) #jsbench #jsperf
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"/> | |
<title>arguments: Array#slice, Array#apply, Array.from, for and while #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> |
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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 () { | |
var rnd = Math.random; | |
var slice = [].slice; | |
var results = []; | |
function resolve(callback) { | |
var retVal = callback(rnd(), rnd(), rnd(), rnd(), rnd()); | |
if (retVal.length !== 5) { | |
throw 'FAIL:retVal'; | |
} | |
results.push(retVal); | |
} | |
}; | |
Benchmark.prototype.teardown = function () { | |
if (results.length < 1) { | |
throw 'FAIL:results'; | |
} | |
}; | |
suite.add("Array#slice.call", function () { | |
/** Array#slice.call **/ | |
resolve(function () { | |
return slice.call(arguments, 0); | |
}); | |
}); | |
suite.add("Array#slice.apply", function () { | |
/** Array#slice.apply **/ | |
resolve(function () { | |
return slice.apply(arguments); | |
}); | |
}); | |
suite.add("Array.from", function () { | |
/** Array.from **/ | |
resolve(function () { | |
return Array.from(arguments); | |
}); | |
}); | |
suite.add("for", function () { | |
/** for **/ | |
resolve(function () { | |
var args = []; | |
for (var i = 0, n = arguments.length; i < n; i++) { | |
args[i] = arguments[i]; | |
} | |
return args; | |
}); | |
}); | |
suite.add("while", function () { | |
/** while **/ | |
resolve(function () { | |
var args = []; | |
var idx = arguments.length; | |
while (idx--) { | |
args[idx] = arguments[idx]; | |
} | |
return args; | |
}); | |
}); | |
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: Array#slice, Array#apply, Array.from, for and while #jsbench #jsperf"); | |
console.log(new Array(30).join("-")); | |
suite.run(); | |
}); |
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