面向对象

一. 创建对象方式一 

function XiaCheng () {

this.name = 'xiacheng';

this.major = 'cs';

this.sex = 'man';

}

XiaCheng.prototype = {

showName : function(){

alert(this.name);

},

showMajor : function(){

alert(this.major);

},

showSex : function(){

alert(this.sex);

},

}

var xia = new XiaCheng();

xia.showName();

xia.showMajor();

xia.showSex();