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JAVASCRIPT網頁應用程式設計
book

JAVASCRIPT網頁應用程式設計

by Alex MacCaw
January 2013
Intermediate to advanced
332 pages
5h 23m
Chinese
GoTop Information, Inc.
Content preview from JAVASCRIPT網頁應用程式設計
JavaScriptMVC 函式庫
|
227
如果想要建立某個類別的子類別,只要在呼叫該類別時,傳入子類別的名稱和屬性
即可:
Animal("Dog",{
wag : function(){
console.log('wag');
}
})
var dog = new Dog;
dog.wag();
dog.breathe();
建立類別的實體
每當我們建立類別的實體時,都會呼叫該類別的
init
函式,並將所有傳入建構子函式
的參數,全數轉傳入
init
函式裡:
$.Class('Person',{
init : function(name){
this.name = name;
},
speak : function(){
return "I am " + this.name + ".";
}
});
var payal = new Person("Payal");
assertEqual( payal.speak() , 'I am Payal.' );
呼叫父類別的函式(Base Methods
如果想呼叫父類別的函式,可以利用
this._super
。像以下這段程式,就會覆寫
person
類別的
speak()
函式、提供更客製化的問候語:
Person("ClassyPerson", {
speak : function(){
return " 哈囉 , " + this._super();
}
});
var fancypants = new ClassyPerson("Mr. Fancy");
assertEquals( ...
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Publisher Resources

ISBN: 9789862766811