构造一个函数 解决实例化对象产生大量重复问题

function createObject(name,age){

var obj = new Object();

obj.name = name;

obj.age = age;

obj.run = function(){

	return this.name + this.age + ‘运行中‘;

};

return obj;

}

var box1 = createObject(‘Lee‘, 100); //第一个实例

var box2 = createObject(‘Jack‘, 200); //第二个实例

alert(box1.run());

alert(box2.run()); 

alert(typeof box1); 

alert(box1 instanceof Object);