perf-calls.js

// test

var math = {
	base: 0,
	add: add
};

function add(a, b) {
	return this.base + a + b;
}

var l = 10000000;

var esBoundAdd = add.bind(math);

var customBoundAdd = customBind(add, math);

function direct() {
	var now = Date.now(), end, r;
	var vals = [1, 1];
	for (var i = 0; i < l; i++) {
		vals[0] = vals[1] = i;
		r = math.add(i, i);
	}
	end = Date.now();
	console.log("direct result:", r, "time:", (end - now));
}


function call() {
	var now = Date.now(), end, r;
	var vals = [1, 1];
	for (var i = 0; i < l; i++) {
		vals[0] = vals[1] = i;
		r = math.add.call(math, i, i);
	}
	end = Date.now();
	console.log("call result:", r, "time:", (end - now));
}

function apply() {
	var now = Date.now(), end, r;
	var vals = [1, 1];
	for (var i = 0; i < l; i++) {
		vals[0] = vals[1] = i;
		r = math.add.apply(math, vals);
	}
	end = Date.now();
	console.log("apply result:", r, "time:", (end - now));
}

function esBound() {
	var now = Date.now(), end, r;
	var vals = [1, 1];

	for (var i = 0; i < l; i++) {
		vals[0] = vals[1] = i;
		r = esBoundAdd(i, i);
	}
	end = Date.now();
	console.log("esBound result:", r, "time:", (end - now));
}

function customBound() {
	var now = Date.now(), end, r;
	var vals = [1, 1];

	for (var i = 0; i < l; i++) {
		vals[0] = vals[1] = i;
		r = customBoundAdd(i, i);
	}
	end = Date.now();
	console.log("customBound result:", r, "time:", (end - now));
}

function customBind(fn, ctx) {
	return function () {
		return fn.apply(ctx, arguments);
	};
}


direct();

call();

apply();

esBound();

customBound();