所有侦听器上的jQuery事件触发 [英] jQuery event triggering on all listeners

问题描述

我有一个自定义事件，我想在某个时候触发该事件，而该事件与选择无关.

I have a custom event I've made which I would like to trigger at some point with no relevance to selection.

IE-我想做一些可以像运行

I.E - I would like to do something that would behave as running

$("*").trigger('customEvent');

但是jQuery文档警告说，使用通用选择器非常慢. 有没有一种方法可以触发绑定到特定事件的所有对象，而不必使用通用选择器$("*")?

But jQuery documentation warns that using the universal selector is very slow. Is there a way to trigger all the object that are bound to a specific event without having to use the universal selector $("*")?

谢谢！

P.S-我目前正在使用称为custom_event_listener的特定class，并使用$('.custom_event_listener').trigger('customEvent')以避免使用通用选择器.我想知道是否有一种避免使用class的方法.

P.S - I'm currently using a specific class called custom_event_listener and use $('.custom_event_listener').trigger('customEvent') to avoid using a universal selector. I'm wondering if there is a way to avoid the use of a class.

推荐答案

您可以在所有绑定了这样的处理程序的事件上触发事件:

You can trigger an event on everything that has a handler bound like this:

$.event.trigger('customEvent'); 

此循环通过$.cache查找真正具有处理程序的对象，然后在这些元素上触发 ...而不是仅仅找到每个元素并在每个元素上触发事件.

This loops through $.cache to find what actually has a handler, then fires on those elements...rather than just finding every element and firing the event on each one.

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