backbone.js的render方法

最新推荐文章于 2020-05-22 10:27:24 发布

原创最新推荐文章于 2020-05-22 10:27:24 发布 · 600 阅读

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本文介绍了一个关于Backbone.js框架中视图渲染的问题。通常情况下，当模型发生变化时，与之绑定的视图会自动调用render方法进行重新渲染。然而，在某些情况下需要手动绑定模型并设置事件监听来触发渲染过程。

发现render方法从来不执行，百思不得骑姐，最后发现这东西需要手动绑定一个model
再给model绑定事件，原来是手动档的…… :arrow: :lol:

[url]http://stackoverflow.com/questions/8972294/backbone-js-nothing-renders-except-when-manually[/url]

Kevin Peel：

In most Backbone examples, render() is implicitly called because a model is set on a view, and that model is tied to the view's render() function.

More specifically, when initializing a view you'd normally have a call where you bind your view's render() function to a model being set/changed, like this:

initialize: function() {
this.model.bind('change', this.render, this);
// ... your init stuff here ...
}
Whenever the model is changed, a change event is fired which triggers your view and calls render().