January 2013
Intermediate to advanced
332 pages
5h 23m
Chinese
Content preview from JAVASCRIPT網頁應用程式設計
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
228
|
第十三章
代理函式（Proxies）
類別的 callback 函式，會回傳一個已經幫你將「this」妥善設定好的函式，callback 函式
的功能就像是
$.proxy
（
http://api.jquery.com/jQuery.proxy/
）。接下來這段程式，會建立一
組
Clicky
類別，計算自己究竟被使用者點擊了幾次：
$.Class("Clicky",{
init : function(){
this.clickCount = 0;
},
clicked: function(){
this.clickCount++;
},
listen: function(el){
el.click( this.callback('clicked') );
}
})
var clicky = new Clicky();
clicky.listen( $('#foo') );
clicky.listen( $('#bar') ) ;
靜態繼承
你可以在類別裡定義一些可供繼承的靜態屬性和函式。接下來這段範例程式碼，會在執
行
Person.findOne(ID,success(person) )
函式後，取得伺服器回傳的
Person
實體。傳
入函式的
success(person)
參數是一組回叫函式，這組回叫函式會接收到伺服器回傳的
Person
實體，並執行它的
speak()
函式：
$.Class("Person",{
findOne : function(id, success){
$.get('/person/'+id, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.