//类的定义
//方法一：类的一般定义方法
functionplayer1(_name)
{
this.name=_name;
this.say=function(){alert(this.name);};
}
varp1=newplayer1('llinzzi1');
p1.say();
//方法二：prototype定义方法
varplayer2=function(){}
player2.prototype={
name:'',
say:function(){
alert(this.name);
}
}
varp2=newplayer2();
p2.name='llinzzi2';
p2.say();
//方法三：上面的方法结构美观，便捷，但构建函数不能带参数，修改方法
varplayer3=function(){
this.init.apply(this,arguments);
}
player3.prototype={
init:function(_name){
this.name=_name;
},
say:function(){
alert(this.name);
}
}
varp3=newplayer3('llinzzi3');
p3.say();
//类的继承
//方法一
varplayer4=function(){
this.init.apply(this,arguments);
}
player4.prototype=newplayer3;
player4.prototype.shout=function(){
alert(this.name.toUpperCase());
}
varp4=newplayer4('llinzzi4');
p4.shout();
//方法二上面的方法不能采用{}的方法，修改方法
Object.extend=function(destination,source){
for(varpropertyinsource)
destination[property]=source[property];
returndestination;
};
varplayer5=function(){
this.init.apply(this,arguments);
}
Object.extend(Object.extend(player5.prototype,player3.prototype),{
shout:function(){
alert(this.name.toUpperCase());
}
});
varp5=newplayer5('llinzzi5');
p5.shout();
//再从prototype.js抄一端浏览器判断代码
Browser={
IE:!!(window.attachEvent&&!window.opera),
Opera:!!window.opera,
WebKit:navigator.userAgent.indexOf('AppleWebKit/')>-1,
Gecko:navigator.userAgent.indexOf('Gecko')>-1&&navigator.userAgent.indexOf('KHTML')==-1,
MobileSafari:!!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
}
alert(Browser.MobileSafari);