(BlueDestiny) 出道javascript的题, 顺带散分~

[BlueDestiny]

先不要运行, 把答案写出来再运行看结果.:)

    <script type="text/javascript">
    //<![CDATA[

			function bar(a, b) {
				alert(a);
				alert(b);
			}

			function foo(x, y) {
				x = 'never-online';
				y = 'BlueDestiny';
				bar.apply(null, arguments);
			}

			function foo2(x, y) {
				var x = 'never-online2';
				var y = 'BluDestiny2';
				bar.apply(null, arguments);
			}

			foo(1, 2); //目测foo函数里执行bar函数的打印结果 a=?, b=?
			foo2(1, 2); //目测foo2函数里执行bar函数的打印结果 a=?, b=?

    //]]>
    </script>

[haidilee]

小鸟不懂

[kitty09_lei]

jf

[漫漫2009]

接分~

[刘星宏]

好像没的分接了。 哈哈

[neubaixu]

对象拦截 那么它的作用又是什么呢 就是这段代码在应用的作用

[skylence]

不错！学习了apply和call的用法了 。

[yuzhoubuding]

貌似这帖子年代好久远了，都顶了3年了，再来

            function bar(a, b) {
                alert(a);
                alert(b);
            }

            function showSomething(a) {
                alert(a);
            }

            function foo(x, y) {
                x = 'never-online';
                y = 'BlueDestiny';
                bar.apply(null, arguments);
            }

            function foo2(x, y) {
                showSomething(x); 
                showSomething(innerFn);//输出==========================?

                var x = 'never-online2'+x;
                var y = 'BluDestiny2'+y;

                function innerFn(){
                    alert(1)
                }

                bar.apply(null, arguments);
            }

            foo(1, 2); 
            foo2(1, 2); 

            function bar(a, b) {
                alert(a);
                alert(b);
            }

            function showSomething(a) {
                alert(a);
            }

            function foo(x, y) {
                x = 'never-online';
                y = 'BlueDestiny';
                bar.apply(null, arguments);
            }

            function foo2(x, y) {
                showSomething(x); 
                showSomething(innerFn);//输出===============?

                var x = 'never-online2'+x;
                var y = 'BluDestiny2'+y;

                var innerFn = 'string...';

                function innerFn(){
                    alert(1)
                }
                

                bar.apply(null, arguments);
            }

            foo(1, 2); 
            foo2(1, 2); 

            function bar(a, b) {
                alert(a);
                alert(b);
            }

            function showSomething(a) {
                alert(a);
            }

            function foo(x, y) {
                x = 'never-online';
                y = 'BlueDestiny';
                bar.apply(null, arguments);
            }

            function foo2(x, y) {
                showSomething(x); 
                showSomething(innerFn);//输出=============?

                var x = 'never-online2'+x;
                var y = 'BluDestiny2'+y;

                

                function innerFn(){
                    alert(1)
                }

                var innerFn = 'string...';

                bar.apply(null, arguments);
            }

            foo(1, 2); 
            foo2(1, 2); 

[yuzhoubuding]

            function bar(a, b) {
                alert(a);
                alert(b);
            }

            function showSomething(a) {
                alert(a);
            }

            function foo(x, y) {
                x = 'never-online';
                y = 'BlueDestiny';
                bar.apply(null, arguments);
            }

            function foo2(x, y) {
                showSomething(x); 

                showSomething(innerFn);//输出======================?

                window.innerFn = function(){alert('window innerFn')};

                var obj = {};
                var x = 'never-online2'+x;
                var y = 'BluDestiny2'+y;


                bar.apply(null, arguments);
            }

            foo(1, 2); 
            foo2(1, 2); 

            function bar(a, b) {
                alert(a);
                alert(b);
            }

            function showSomething(a) {
                alert(a);
            }

            function foo(x, y) {
                x = 'never-online';
                y = 'BlueDestiny';
                bar.apply(null, arguments);
            }

            function foo2(x, y) {
                showSomething(x); 

                showSomething(innerFn);//输出==========================?

                window.innerFn = function(){alert('window innerFn')};
                
                var innerFn = 'string Fn'

                var obj = {};
                var x = 'never-online2'+x;
                var y = 'BluDestiny2'+y;


                bar.apply(null, arguments);
            }

            foo(1, 2); 
            foo2(1, 2); 

[小歪]

接分啦

[iamyuqy]

长见识了

[靓仔]

我还是学习吧...

[xu_2000_xu]

学习吧，努力

[a734752272]

低调接分，在研究

[wangsj_2001]

先收藏起来，慢慢研究

[hch126163]

function foo2(x, y) {
var x = 'never-online2';
var y = 'BluDestiny2';
bar.call(null, x, y);
}

这种写法就坑爹。

[meeming]

收藏+接分+脸红

[chenliangtadu]

果断认为我的目测很准 呵呵！apply call 和 arguments

[焖三爷]

说实话 我真看不懂

[sc829475awlp]

jf....

[Eversnow]

JF.....