JavaScript接口2

2.用屬性檢查模仿接口

   1. /* 
   2. interface Person { 
   3.     function  name(); 
   4.    function  gender(); 
   5.    function birthday(); 
   6. } 
   7. */  
   8. var man = function (name,gender,birthday){  
         this.implementsInterfaces = ['Person'];
   9. //implements Person  
      
  10. };
      function implements(object){
       for(var i=1;i<arguments.length;i++){
           var interfaceName= arguments[i];
           var interfaceFound = false;
           for(object.implementsInterfaces.length;j++){
             if(object.implementsInterfaces[j] == interfaceName){
                 interfaceFound = true;
                  break;
                }
            }
            if(!interfaceFound){
             return false;
            }
          }
        return true;
      }；  
  funtion addPerson(PersonInstance){
         if(!implements(PersonInstace,'Person'){
               throw new Error("Object doesn't implement a required interface");
              }

}