js的两种属性

javascript创建对象

1. 工厂模式

函数内创建Object,并通过函数传入参数构建各属性,最后返回该Object.

function createPerson(name, age, job){
    var o = new Object();
    o.name = name;
    o.age = age;
    o.job = job;
    o.sayName = function(){
        alert(this.name);
    };
    return o;
}
var person1 = createPerson("Nicholas", 29, "Software Engineer");
var person2 = createPerson("Greg", 27, "Doctor");

2. 构造函数模式

function createPerson2(name,age,job)
{
    this.name = name;
    this.age = age;
    this.sayName = function(){
    	alert(this.name);
    }
}

var p1 = new createPerson2("lilin",22);
alert(p1.name);
p1.sayName();