希望您能快速浏览一下我在这里做的事情。从本质上讲，我做得对吗？
这里也有它的现场演示:http://littlejim.co.uk/code/backbone/messing-around/
我只是想在我过于疯狂之前对 Backbone 有一个扎实的了解。所以这是从 JSON 对象创建集合、将其传递给 View 并处理简单事件的简单演示。但我这样做对吗？我能做些什么更好？
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Showing a simple view with events</title>
<script type="text/javascript" src="../../media/scripts/jquery-1.5.1.min.js"></script>
<script type="text/javascript" src="../../media/scripts/underscore-min.js"></script>
<script type="text/javascript" src="../../media/scripts/backbone-min.js"></script>
<script type="text/javascript" src="application.js"></script>
</head>
<body>
<header>
<h1>Showing views from a collection and basic events</h1>
<p>The list below is made from JSON, passed to the view as a collection and has basic events</p>
</header>
<article>
</article>
</body>
</html>
这是我目前拥有的 JavaScript。我只需要知道我是否正确处理这个问题？
window.App = {
// namespaces
Controller: {},
Model : {},
Collection : {},
View : {},
// code that starts when the app is first fired
initialize : function () {
var collection = new App.Collection.Inputs([
{title: "Item 1"},
{title: "Item 2"},
{title: "Item 3"}
]);
var view = new App.View.InputSet({collection: collection});
$('article').html(view.render().el);
}
}
/*
Collection: Inputs */
App.Collection.Inputs = Backbone.Collection.extend();
/*
View: _Input */
App.View._Input = Backbone.View.extend({
events: {
"click a": "close"
},
// called as soon as a view instance is made
initialize: function() {
// this makes the render, clear etc available at this
// if not setting this, both render() and clear() method will not have themselves in this
_.bindAll(this, "render", "close");
},
// backbone required method, which renders the UI
render: function() {
// this is using underscore templating, which can be passed context
$(this.el).html(_.template('<p><%=title%> <a href="#">[close]</a></p>', this.model.toJSON()));
return this;
},
close: function() {
// removes the UI element from the page
$(this.el).fadeOut(300);
return false; // don't want click to actually happen
}
});
/*
View: InputSet, uses _Input */
App.View.InputSet = Backbone.View.extend({
events: {
'click a': 'clear'
},
initialize: function() {
// this makes the render, clear etc available at this
// if not setting this, both render() and clear() method will not have themselves in this
_.bindAll(this, "render");
},
// backbone required method, which renders the UI
render: function() {
var that = this;
views = this.collection.map(function(model) {
var view = new App.View._Input({model: model});
$(that.el).append(view.render().el);
return view;
});
$(that.el).append('<a href="#">[clear]</a>');
return this;
},
clear: function() {
$(this.el).find('p').fadeOut(300);
}
});
// wait for the dom to load
$(document).ready(function() {
// this isn't backbone. this is running our earlier defined initialize in App
App.initialize();
});
最佳答案
这对我来说很好。但是，我发现一旦开始做一些重要的事情，事情就会变得棘手:复杂的 View 、嵌套的集合等。
可以做的不同的一件事是，您可以将集合的 add 事件绑定(bind)到生成 的函数，而不是使用 查看集合中该项目的 View 。所以你的 collection.map 生成输入 View >_InputInputSet View 中会有这样的东西:
initialize: function() {
_.bindAll(this, "addInput", "removeInput");
this.collection.bind("add", this.addInput);
this.collection.bind("remove", this.removeInput);
}
addInput: function(model) {
var view = new App.View._Input({model: model});
$(this.el).append(view.render().el);
}
关于javascript - Backbone 基本应用程序，这是应该如何完成的吗？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5464700/