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Fastest method to slice arguments at index 2 (https://jsbench.github.io/#e68458777bae1f89c06b8ff325c7e67a) #jsbench #jsperf
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"/> | |
<title>Fastest method to slice arguments at index 2</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 () { | |
function ArrayProtoSlice() { | |
return Array.prototype.slice.call(arguments, 2); | |
} | |
function ArrayApplySlice() { | |
return Array.apply(null, arguments).slice(2); | |
} | |
function ForEach() { | |
var len = arguments.length, args=new Array(len-2); for(var i=2; i<len; i++){ args[i-2] = arguments[i]; } | |
return args; | |
} | |
function ForEachPush() { | |
var args = []; for(var i=2, len=arguments.length; i<len; i++){ args.push(arguments[i]); } | |
return args; | |
} | |
function doTest(f) { | |
return f(window.document, 1000, 3.0, 4, 'some string here', {option:true}); | |
} | |
}; | |
suite.add("ForEach", function () { | |
//ForEach | |
doTest(ForEach); | |
}); | |
suite.add("ForEachPush", function () { | |
//ForEachPush | |
doTest(ForEachPush); | |
}); | |
suite.add("ArrayProtoSlice", function () { | |
//ArrayProtoSlice | |
doTest(ArrayProtoSlice); | |
}); | |
suite.add("ArrayApplySlice", function () { | |
//ArrayApplySlice | |
doTest(ArrayApplySlice); | |
}); | |
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("Fastest method to slice arguments at index 2"); | |
console.log(new Array(30).join("-")); | |
suite.run(); | |
}); |
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