require.js + Backbone.js的:如何构建有一个初始化功能模块? [英] require.js + backbone.js: How to structure modules that have an initialize function?
问题描述
我有三个页面(这是单页界面)的应用程序。该网页有相似但不完全相同的功能。
I have an application with three pages (which are single-page interfaces). The pages have similar but not identical functionality.
所以,我想有JavaScript的模块,提供了常用的功能。然后,每个页面可以自定义/覆盖的通用功能的部分。
So I want to have javascript-modules that provide the common functionality. Then each page may customize/overwrite parts of the common functionality.
我使用Backbone.js的,所以我做的是:
I'm using backbone.js, so what I do is:
- 加载包含常见的模型文件,浏览,收藏等。
- 加载应用程序特定的文件定义的步骤1 /覆盖部分
- 调用instanciates所有必要的模型/查看/收藏的init()函数
目前,我存储我的模块,类似于这样一个模块容器: http://stackoverflow.com/a/9426071一>
每个模块都有由我的主要init()函数中执行一个可选的init()函数。
At the moment I store my modules in a module-container similar to this: http://stackoverflow.com/a/9426071 Each module has an optional init() function that is executed by my main init() function.
例如:
-
我有一个名为results.js文件。它定义了常见的型号/系列/搜索结果观。在它的init()函数一切都实例化,但这个功能尚未名为:
I have a file called results.js. It defines the common Model/Collection/View of search-results. In its init() function everything is instanciated, but this function is not yet called:
var resultView = new ResultView()
然后我有myApp.js,并覆盖查看的部分。
Then I include myApp.js, and parts of the View are overwritten.
现在我想切换到require.js,而不是我自己的模块容器,并想知道如何安排我的code。
Now I want to switch to require.js instead of my own module-container, and wonder how to organize my code.
我既可以实例化的所有模型/视图等。myApp.js,而不是每个模块的init()函数。这意味着有大量的重复code的。
I could either instanciate all models/views etc. in myApp.js instead of the init() function of each module. This would mean to have a lot of repetitive code.
或者,我可以坚持到每个模块有它的init()函数,调用这些的init()函数myApp.js。我不喜欢这一点,因为我会到我的模块明确地写下来三次,每次我的三个页面:
Or I could stick to each module having its init() function, and call those init() functions in myApp.js. I don't like this because I would have to explicitly write down my modules three times for each of my three pages:
require(['module1', 'module2', 'module3', ...],
function(module1, module2, module3, ...) {
var init = function() {
module1.init();
module2.init();
module3.init();
...
}
return {init: init};
}
);
有关10个模块加上一个数字图书馆,这不是很干爽。有没有什么办法来访问(通过循环)的require.js所有模块持有?
For 10 modules plus a number of libraries this is not nice and DRY. Is there any way to access (loop over) all modules that require.js holds?
还是我失去了一些东西,我应该构建我的code以不同的方式?
Or am I missing something, should I structure my code in a different way?
任何提示/想法是受欢迎的,
Any hints/thoughts are welcome,
迈克尔
推荐答案
正如上述评论的讨论,你可以避免使用的 参数
对象。所以:
As discussed in the comments above, you can avoid having to explicitly reference the parameters of the function by looping over them using the arguments
object inside the function body. So:
require(['module1', 'module2', 'module3', ..., 'moduleN'],
function(module1, module2, module3, ..., moduleN) {
var init = function() {
module1.init();
module2.init();
module3.init();
...
moduleN.init();
};
return {init: init};
});
变成了:
require(['module1', 'module2', 'module3', ..., 'moduleN'],
function() {
var args = arguments;
var init = function() {
var module;
for (module in args) {
if (args.hasOwnProperty(module) && typeof module.init === 'function') {
module.init.call(this);
}
}
};
return {init: init};
});
我在的hasOwnProperty加()
检查里面的在
循环,因为,对于一些原因,这是好的做法。此外,您会看到的init
明确检查试图调用它之前是一个功能。
I added in a hasOwnProperty()
check inside the for in
loop because, for a number of reasons, it's good practice. Also, you'll see the explicit check for init
being a function before attempting to call it.
原因变参=参数
是这样你就可以从内部函数引用它 - 否则你会被引用传递给初始化参数()
,这是不是你想要的。
The reason for var args = arguments
is so you can reference it from the inner function - otherwise you would be referencing the arguments passed to init()
, which is not what you want.
由于和一边,在一个建筑的水平,我想你所描述的项目结构的成效斐然, - 我把它用在了很多非常大的项目,它从来没有让我失望。 Require.js是真棒! :)
As and aside, on an architectural level, I think the project structure you've described works incredibly well - I use it on a lot of very big projects and it's never let me down. Require.js is awesome! :)
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