gabsoftware/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"/>
	<title>Finding out the fastest way to loop through an array</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>

## suite.js
"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 arr = [];

		for( var cpt = 0; cpt < 1000; cpt++ ) {
		  arr.push( Math.random() );
		}

		var someFn = function( item ) {
		  return item * 3 + item / 5;
		}
		//console.log( "benchmark started" );
	};

	Benchmark.prototype.teardown = function () {
		//console.log( "benchmark ended" );
	};

	suite.add("for( var i = 0, n = arr.length; i < n; i++ ) {", function () {
		for( var i = 0, n = arr.length; i < n; i++ ) {
		    someFn( arr[ i ] );
		}
	});

	suite.add("for( var i = arr.length; i > -1; i-- ) {", function () {
		for( var i = arr.length; i > -1; i-- ) {
		    someFn( arr[ i ] );
		}
	});

	suite.add("arr.forEach( someFn );", function () {
		arr.forEach( someFn );
	});

	suite.add("for( var e = arr.entries(), n = e.next(); ! n.done; n = e.next() ) {", function () {
		for( var e = arr.entries(), n = e.next(); ! n.done; n = e.next() ) {
		    someFn( n.value[ 1 ] );
		}
	});

	suite.add("var e = arr.entries(), n = e.next();", function () {
		var e = arr.entries(), n = e.next();
		while( ! n.done ) {
		    someFn( n.value[ 1 ] );
		    n = e.next();
		}
	});

	suite.add("for( var i in arr ) {", function () {
		for( var i in arr ) {
		    someFn( arr[ i ] );
		}
	});

	suite.add("for( r of arr ) {", function () {
		for( r of arr ) {
		    someFn( r );
		}
	});

	suite.add("arr.map( someFn );", function () {
		arr.map( someFn );
	});

	suite.add("arr.filter( someFn );", function () {
		arr.filter( someFn );
	});

	suite.add("var e = arr.entries(), n;", function () {
		var e = arr.entries(), n;
		while( ! ( n = e.next() ).done ) {
		    someFn( n.value[ 1 ] );
		}
	});

	suite.add("for( var e = arr.entries(), n; ! (n = e.next()).done; ) {", function () {
		for( var e = arr.entries(), n; ! (n = e.next()).done; ) {
		    someFn( n.value[ 1 ] );
		}
	});

	suite.add("for( var i = 0, n = arr.length; i < n; ) {", function () {
		for( var i = 0, n = arr.length; i < n; ) {
		    someFn( arr[ i++ ] );
		}
	});

	suite.add("for( var i = 0, n = arr.length; i < n; someFn( arr[ i++ ] ) ) ;", function () {
		for( var i = 0, n = arr.length; i < n; someFn( arr[ i++ ] ) ) ;
	});

	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("Finding out the fastest way to loop through an array");
	console.log(new Array(30).join("-"));
	suite.run();
});
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8"/>
	<title>Finding out the fastest way to loop through an array</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;

	Benchmark.prototype.setup = function () {
	var arr = [];

	for( var cpt = 0; cpt < 1000; cpt++ ) {
	arr.push( Math.random() );
	}

	var someFn = function( item ) {
	return item * 3 + item / 5;
	}
	//console.log( "benchmark started" );
	};

	Benchmark.prototype.teardown = function () {
	//console.log( "benchmark ended" );
	};

	suite.add("for( var i = 0, n = arr.length; i < n; i++ ) {", function () {
	for( var i = 0, n = arr.length; i < n; i++ ) {
	someFn( arr[ i ] );
	}
	});

	suite.add("for( var i = arr.length; i > -1; i-- ) {", function () {
	for( var i = arr.length; i > -1; i-- ) {
	someFn( arr[ i ] );
	}
	});

	suite.add("arr.forEach( someFn );", function () {
	arr.forEach( someFn );
	});

	suite.add("for( var e = arr.entries(), n = e.next(); ! n.done; n = e.next() ) {", function () {
	for( var e = arr.entries(), n = e.next(); ! n.done; n = e.next() ) {
	someFn( n.value[ 1 ] );
	}
	});

	suite.add("var e = arr.entries(), n = e.next();", function () {
	var e = arr.entries(), n = e.next();
	while( ! n.done ) {
	someFn( n.value[ 1 ] );
	n = e.next();
	}
	});

	suite.add("for( var i in arr ) {", function () {
	for( var i in arr ) {
	someFn( arr[ i ] );
	}
	});

	suite.add("for( r of arr ) {", function () {
	for( r of arr ) {
	someFn( r );
	}
	});

	suite.add("arr.map( someFn );", function () {
	arr.map( someFn );
	});

	suite.add("arr.filter( someFn );", function () {
	arr.filter( someFn );
	});

	suite.add("var e = arr.entries(), n;", function () {
	var e = arr.entries(), n;
	while( ! ( n = e.next() ).done ) {
	someFn( n.value[ 1 ] );
	}
	});

	suite.add("for( var e = arr.entries(), n; ! (n = e.next()).done; ) {", function () {
	for( var e = arr.entries(), n; ! (n = e.next()).done; ) {
	someFn( n.value[ 1 ] );
	}
	});

	suite.add("for( var i = 0, n = arr.length; i < n; ) {", function () {
	for( var i = 0, n = arr.length; i < n; ) {
	someFn( arr[ i++ ] );
	}
	});

	suite.add("for( var i = 0, n = arr.length; i < n; someFn( arr[ i++ ] ) ) ;", function () {
	for( var i = 0, n = arr.length; i < n; someFn( arr[ i++ ] ) ) ;
	});

	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("Finding out the fastest way to loop through an array");
	console.log(new Array(30).join("-"));
	suite.run();
	});