Javascript 面向对象编程原型对象方法(补充)

//Json对象
var programmer = {            
    name:"kevin",          
    age:25,
    displayInfo : function(){      
            alert("My name is "+this.name+", I'm "+this.age+" years old")      
  
   } ,
   job : {
		position : "BPM programmer",
		getTitle:function(){
			alert(this.position);
		}
   }
   
 }
programmer.displayInfo();     //My name is kevin, I'm 25 years old
programmer.job.getTitle();   //BPM programmer