A2D JS框架 - AOP封装

AOP在js中的实现，先看看用法吧：

        var A2D = $.noConflict();//不要误会，此乃我自己写的A2D框架，非jQuery

        function fn1(name, age) {
            console.log("name: " + name);
            console.log("age: " + age);
        }
        function b1() {
            console.log("b1");
            console.log("b1, parameters - 0: " + arguments[0]);
            console.log("b1, parameters - 1: " + arguments[1]);
            console.log("b1, parameters - 2: " + arguments[2]);
            console.log("b1, parameters - 3: " + arguments[3]);
            console.log("b1, parameters - 4: " + arguments[4]);
            console.log("b1, parameters - 5: " + arguments[5]);
        }
        function b2() {
            console.log("b2");
        }
        function a1() {
            console.log("a1");
        }
        function a2() {
            console.log("a2");
        }

        var aopfn1 = A2D.aop(fn1, {
                                            before: [b1, b2],
                                            after: [a1, a2]
                                        });
        aopfn1.execute("aaron", 20);

核心A2D代码实现(before和after AOP，实现了6个参数)：

function aop(fn, config) {
        if (!fn instanceof Function)
            alert("fn must be a function");
        if (config == null || config == undefined || !config instanceof Object)
            alert("config can not be empty");

        function aopWrapper(fn, config) {
            this.realFunction = fn;
            this.beforeFunctions = config.before.concat();
            this.afterFunctions = config.after.concat();
        }
        aopWrapper.prototype.execute = function () {
            if (this.beforeFunctions)
                for (var fn in this.beforeFunctions)
                    this.beforeFunctions[fn].call(this.realFunction,    arguments[0],
                                                                        arguments[1],
                                                                        arguments[2],
                                                                        arguments[3],
                                                                        arguments[4],
                                                                        arguments[5]);
            this.realFunction.call(this.realFunction,   arguments[0],
                                                        arguments[1],
                                                        arguments[2],
                                                        arguments[3],
                                                        arguments[4], 
                                                        arguments[5]);
            if (this.afterFunctions)
                for (var fn in this.afterFunctions)
                    this.afterFunctions[fn].call(this.realFunction,     arguments[0],
                                                                        arguments[1],
                                                                        arguments[2],
                                                                        arguments[3],
                                                                        arguments[4],
                                                                        arguments[5]);
        }

        wrapper = new aopWrapper(fn, config);

        return wrapper;
    }