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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
|
243
先前「封裝服務」一節裡提過的函式:
findAll
findOne
save
,和
destroy
,都會回
傳延遲物件,因此可以把產生 tasks 模版內容的程式,用一行搞定:
$('#tasks').html("views/tasks.ejs" , Task.findAll() )
如果想一次傳入多組延遲物件,也沒問題:
$('#app').html("views/app.ejs" , {
tasks: Task.findAll(),
users: User.findAll()
})
包裝、預先載入及效能
$.View
預設會以同步方式載入模版,因為它假設你會:
將模版寫在 script 標籤裡面
將模版和 JavaScript 程式包在一起
預先載入模版
JavaScriptMVC 並不建議你將模版寫在 script 標籤裡面,因為這會讓不同的 JavaScript
程式不易共用模版。而且如果你的系統沒有馬上要用到這些模版,這種做法也會降低載
入網頁的效能。
JavaScriptMVC 建議的做法是,先把常用的模版和 JavaScript 檔案包在一起,程式執行
期如果還需要用到其他模版,再以預先載入的方式載入模版。
JavaScriptMVC 所採用的建置系統 StealJS,能幫我們處理並包裝模版、將模版加進正式
環境建置版本(已經過程式碼精簡工具處理的版本)。你只需要利用
steal.views(PATH,
...)
指定模版路徑即可:
steal.views('tasks.ejs','task.ejs'); ...
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Publisher Resources

ISBN: 9789862766811