javascript 动态织入 拦截(aop) 代码与动态继承

  
var person = {};      
obj.name = "xxx";      
obj.sex = "yyy";      
obj.myFunction = function(){ alter(obj.name);  }      
     
var ePer = {};      
ePer ['field'] = 'field';      
ePer.myFunction  = function(){ alter(ePer .'field')  };      
  
ePer.extendBy = function(parant){      
       for(var i in person ){      
         if(parant[i]=="undefine")continue;      
         extendPer[i] =  parant[i];      
      }      
}      
//进行继承 或重载    
ePer.extendBy(person);    
  
var person2 = function(){   
       
    this.field1 = "xxx";   
};      
person2.prototype.myFn = function(){   
    return this.field1;   
}   
  
//多继承    
ePer.extendBy(new person2());    
  
  
/****************************************************  
  动态  javascript aop 呵呵  
*****************************************************/  
//动态运行时的拦截代码织入 操作类  

var aopEmbed = function(){   
       
     /** 拦截前   
      *  exeAop 自定义拦截代码  
       *  aimObj 被拦截的类  
       *  aimMethod 所拦截的目标方法名  
       *  scope 拦截方法执行时 的运行作用域  
      **/  
     this.beforEmbed = function(exeAop,args1,aimObj,args2,aimMethod,scope){   
             
          this['BScope'] = aimObj[aimMethod];   
          aimObj[aimMethod] = function(){   
                 exeAop.call(scope,args1);   
                 this['BScope'].call(scope,args2);   
          }   
    }   
    //拦截后   
    this.afterEmbed = function(exeAop,args1,aimObj,args2,aimMethod,scope){   
             
          this['BScope'] = aimObj[aimMethod];   
          aimObj[aimMethod] = function(){   
                this['BScope'].call(scope,args2);   
                exeAop.call(scope,args1);   
          }   
    }   
  
}