Benchmark javascript callback functions - anonymous vs named

bench-callback.js

//Benchmark calling a function passing it an anonymous function vs passing it a named function
//

var iterations = 100000;

function testAnon(fn) {
        console.time('test-anonymous-function');
        for (var x = 0; x < iterations; x++) {
                fn(function () {});
        }
        console.timeEnd('test-anonymous-function');
}

function testNamed(fn) {
        console.time('test-named-function');
        for (var x = 0; x < iterations; x++) {
                fn(doNothing);
        }
        console.timeEnd('test-named-function');

        function doNothing() {};
}


for (var y = 0; y < 5; y++) {
        testAnon(function () {});
}

for (var y = 0; y < 5; y++) {
        testNamed(function() {});
}

bench-forEach-callback.js

//Benchmark calling array.forEach() passing it an anonymous function vs passing it a named function
//
var iterations = 1000000;
var ary = [0,1,2,3,4,5,6,7,8,9];

function testAnon() {
        console.time('test-anonymous-function');
        for (var x = 0; x < iterations; x++) {
                ary.forEach(function () {});
        }
        console.timeEnd('test-anonymous-function');
}

function testNamed() {
        console.time('test-named-function');
        for (var x = 0; x < iterations; x++) {
                ary.forEach(doNothing);
        }
        console.timeEnd('test-named-function');

        function doNothing() {};
}


for (var y = 0; y < 5; y++) {
        testAnon();
}

for (var y = 0; y < 5; y++) {
        testNamed();
}

bench-nextTick-callback.js

//Benchmark calling process.nextTick passing it an anonymous function vs passing it a named function
//

var iterations = 100000;

function testAnon() {
        console.time('test-anonymous-function');
        for (var x = 0; x < iterations; x++) {
                process.nextTick(function () {});
        }

        process.nextTick(function () {
                console.timeEnd('test-anonymous-function');
        });
}

function testNamed() {
        console.time('test-named-function');
        for (var x = 0; x < iterations; x++) {
                process.nextTick(doNothing);
        }

        process.nextTick(function () {
                console.timeEnd('test-named-function');
        });

        function doNothing() {};
}


for (var y = 0; y < 5; y++) {
        testAnon();
}

for (var y = 0; y < 5; y++) {
        testNamed();
}