创建对象的几种方法

方法一：new Object()

var stu = new Object();
stu.name = 'xiaolin';
alert(stu.name); //xiaolin

方法二：{}

var stu = {}
stu.name = 'xiaolin';
alert(stu.name); //xiaolin

var student = {name: 'xiaolin', sex: '男'};
alert(student.name); //xiaolin

方法三：function xx()

function student(name, sex) {
    this.name = name;
    this.sex = sex;
}
var stu1 = new student('xiaolin', '男');
alert(stu1.name); //xiaolin

var stu2 = new student('xiaohong', '女');
alert(stu2.name); //xiaohong

为对象中添加方法

方法一：

var stu = {};
stu.study = function() {
    alert('learning');
}
stu.study(); //learning

方法二：

function student(name, sex) {
    this.name = name;
    this.sex = sex;
    this.study = function() {
        alert(this.name);
    }
}
var stu1 = new student('xiaolin', '男');
stu1.study(); //xiaolin

var stu2 = new student('xiaohong', '女');
stu2.study(); //xiaohong