jsの実行速度さっくり図るjs

js

(function() {
    var start, end, i;

    start = (new Date()).getTime();

    for (i = 0; i < 10000000; i++ ) {
        (function(){
            var hoge;

            return; // これの有り無しとかで調査

            hoge = function () {
                var a;
                a = 10000;

                function hogehoge () {
                    console.log('no action.');
                }
                function fugafuga () {
                    console.log('no action.');
                }
            };

            hoge();
        })();
    }

    end = (new Date()).getTime();

    console.log('execute:' + (end - start));
})();