javascript - 骨干多事件

Question

我试图理解以下代码：

muConfigView.on("mu:field:changed", function() {
  updateButtonState();
}, this);

或者

this.trigger('validate:fields');

我已经看到了我理解的变化等事件的例子。

有人可以解释一下"mu:field:changed"&的目的'validate:fields'是什么吗？

Answer 1

Backbone has it's own events built in, but you can also make up your own, which you can trigger and listen for.

The convention is to "namespace" events using colons (:) so that you can better organise your code as it can soon get out of hand once you start using a lot of events.

In your first example, when the mu:field:changed is triggered, the anonymous function will be called.

In your second example, the validate:fields event is being fired and will be handled by a listener somewhere else.