已引入jQuery仍报ReferenceError: Can't find variable: events错误求助

Hey there! Let's break down why you're running into this error and how to fix it quickly.

The Root Cause #

The error ReferenceError: Can't find variable: events means exactly what it says: the events variable you're passing to jQuery(events) hasn't been defined anywhere in your code. jQuery's $() function expects a valid input (like a selector string, DOM element, jQuery object, or even a plain object for event handling) — but right now, events is just an undefined name.

How to Fix It #

You have two common, straightforward solutions depending on your use case:

1. Trigger Events on a Global Element (Like document or window)

If you want these dizmo.resized and dizmo.turned events to be accessible globally, you can attach them to the document object, which is always available:

jQuery(document).trigger('dizmo.resized', [dizmo.getWidth(), dizmo.getHeight()]);
jQuery(document).trigger('dizmo.turned', ['front']);

2. Create a Custom Event Bus Object

If you prefer a dedicated container for these events (to avoid cluttering the global document), define an events variable as a plain jQuery-wrapped object first:

// Define your event bus first
const events = jQuery({});

// Now trigger your events on this bus
jQuery(events).trigger('dizmo.resized', [dizmo.getWidth(), dizmo.getHeight()]);
jQuery(events).trigger('dizmo.turned', ['front']);

This works because jQuery can bind and trigger events on plain objects, making them perfect for a lightweight event bus.

Quick Note #

Just double-check that the dizmo variable is also properly defined and available when you run these lines — otherwise, you might hit a similar reference error for dizmo next!

内容的提问来源于stack exchange，提问作者Pushpak