简单模拟javaScript面向对象
<html>
<head>
<script type="text/javascript">
if (!Object.create) {
Object.create = function (o) {
function F() {}
F.prototype = o;
return new F();
};
}
function alertt(){
ca = new cat();
alert(ca.name);
dog1=Object.create(Dog);
dog1.shout();
pig=Pig.createNew();
pig.shout();
spig = SmallPig.createNew();
spig.shout();
}
//方法一
Pig = {
job:"eat";//全局静态变量，可被多个对象共享
createNew: function(){
var pig = {};
sound = "herher";//直接定义是私有
pig.name = "BigPig";
pig.shout = function(){ alert(sound); };
return pig;
}
};
//继承
SmallPig = {
createNew: function(){
var pig = Pig.createNew();
pig.name = "SmallPig";
pig.shout = function(){ alert("wuher wuher"); };
return pig;
}
}
//方法二
Dog={
shout:function(){alert("wangwang");}
}
//方法三
function cat(){
this.name = "miaomiao";
}
</script>
</head>
<body>
<button id="b01" type="button" onclick="alertt()">动物叫</button>
</body>
</html>
