JS高程6.面向对象的程序设计（2）创建对象_2 构造函数也是一般函数

var Person=function(name,age,job){
        this.name=name;
        this.age=age;
        this.job=job;
        this.sayname=function(){
            console.log(this.name);
        }
    }

1 var person=new Person("xiaoming",21,"Doctor");
2   person.sayname();//xiaoming

1  Person("xiaoming",21,"Doctor");
2   window.sayname();//xiaoming
3   sayname();//xiaoming

1 var o=new Object();
2   Person.call(o,"xiaoming",12,"Doctor");
3   Person.apply(o,["xiaoming1",13,"Doctor"]);//xiaoming1
4   o.sayname();//xiaoming