January 2013
Intermediate to advanced
332 pages
5h 23m
Chinese
Content preview from JAVASCRIPT網頁應用程式設計
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處理檔案
|
107
• Firefox：不支援
• IE >= 5.0（採用不同的 API）
複製
和複製相關的事件有兩組，和剪下相關的事件也有兩組：
•
beforecopy
•
copy
•
beforecut
•
cut
顧名思義，
beforecopy
和
beforecut
，會在任何和剪貼簿相關的作業真正開始執行前被觸
發，讓你有機會決定是否該取消它們。當使用者複製某些被選中的文字時，會觸發
copy
事件，你可以利用
copy
事件裡的
clipboardData
物件，自行設定剪貼簿裡的資料內容。
clipboardData
和
dataTransfer
物件一樣，都有一個
setData()
函式，讓你可以設定
MIME 格式以及對應的字串值。如果打算呼叫這個函式，就一定得先取消原本的
copy
事
件，中止該事件的預設行為。
IE 的
clipboardData
物件，是放在
window
，而非 event 物件。因此你得先檢查 event 物
件裡有沒有
clipboardData
物件，如果沒有，就要再檢查該物件是否存在於 window 裡。
Firefox 雖然會觸發
copy
事件，但不允許存取
clipboardData
物件。Chrome 雖然能讓你
拿到
clipboardData
物件，但卻無法讓你設定任何資料。
$("textarea").bind("copy", function(event){
event.stopPropagation();
event.preventDefault();
var cd = event.originalEvent.clipboardData; ...
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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.