March 2012
Intermediate to advanced
244 pages
4h 42m
Chinese
Content preview from JavaScript 設計模式
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106
第五章
如果需要，你也可以利用「函式也是物件」這個特性，將一些資料用「靜態」（static）
屬性的方式儲存在
Sandbox()
建構式裡。
最後，你可以依據所需的模組的類型，來產生不同實體，且這些實體都可以彼此獨立
工作。
我們來看看可以如何逐步實作
Sandbox()
建構式和它的模組，以支援上述這些功能。
新增模組
在真正實作建構式之前，我們先來看看可以如何逐步新增模組。
Sandbox()
建構式也是物件，所以你可以新增一個名為
modules
的靜態屬性。這屬性又是
另一個物件，包含許多名值對，鍵值是模組名稱，而值則是每個模組的實作函式：
在這範例中，我們加入了
dom
、
event
和
ajax
模組，這些都是在各個函式庫，或者複雜的
網頁應用上很常見的一些功能。
實作這些模組的每個函式都接受
box
實體為參數，可能會在函式中新增屬性或方法到這個
實體中。[103]
如有必要則存取 Sandbox 的原型
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