<html lang="en">
<head>
<meta charset="utf-8">
<title>prototype demo</title>
</head>
<body>
<input type="button" value="click me" onclick="test()" />
</body>
<script>
function Chess(name, price){
this.name = name;
this.price = price;
this.setName = function(name){
this.name = name
}
this.getName = function(){
return this.name;
}
this.setPrice = function(price){
this.price = price
}
this.getPrice = function(){
return this.price;
}
Chess.prototype.CO_LTD = "娛樂科技股份有限公司";
Chess.prototype.say = function(){
return "象棋類別，軍啦！";
}
}
function test(){
var c = new Chess('象棋', 40);
alert(c.name)
alert(c.getName());
alert(c.price)
alert(c.getPrice());
alert(c.say());
alert(c.CO_LTD);
alert(Chess.toString());// 回傳Chess類別，為內鍵方法
}
</script>
</html>
Chess.prototype也可以寫在外面，如下：
function Chess(name, price){
this.name = name;
this.price = price;
this.setName = function(name){
this.name = name
}
this.getName = function(){
return this.name;
}
this.setPrice = function(price){
this.price = price
}
this.getPrice = function(){
return this.price;
}
}
Chess.prototype.CO_LTD = "娛樂科技股份有限公司";
Chess.prototype.say = function(){
return "象棋類別，軍啦！";
}
差別在Chess.toString()就沒有Chess.prototype的程式碼了
prototype類似java的static，共用同一個空間，但呼叫不能類別.方法或屬性
this.屬性，看起來類似java的public，所以不用寫setter/getter也可以
類別裡一定要用this；呼叫時一定要用new，否則不具意義
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