Скачать или смотреть How to Handle VueJs Events in Regular JavaScript Outside the Component

Discover how to effectively capture `VueJs` events in regular JavaScript and modify your components to enhance interaction.
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Handling VueJs Events in Regular JavaScript Outside the Component

In modern web development, it's common to integrate VueJs components within broader web applications. However, a frequent challenge developers face is managing events emitted from a VueJs component in plain JavaScript that exists outside of the VueJs ecosystem. If you've found yourself needing to respond to those emitted events on the surrounding webpage, you're not alone. This guide will guide you through the process of effectively capturing those VueJs events in regular JavaScript.

The Problem

Imagine you're building a dynamic web page that employs a VueJs component, for instance, a custom <sites> component. This component emits events, such as custom data (pmds), as shown:

[[See Video to Reveal this Text or Code Snippet]]

However, you might wonder how to listen for this pmds event and execute standard JavaScript to handle the emitted data. If you try to create a handler function like this:

[[See Video to Reveal this Text or Code Snippet]]

You'll encounter an issue because this function isn't recognized as a VueJs method, so it can't directly listen to events emitted by the VueJs instance. Fear not, because there's a solution!

The Solution

1. Creating a Custom Event in VueJs

To bridge the gap, you will utilize the CustomEvent interface, which allows you to create and dispatch events in a way that regular JavaScript can understand. Here’s how to do it:

Step-by-Step Guide:

Define a method within your VueJs component that sends the desired event using CustomEvent.

Here's an example method you can implement in your Vue component:

[[See Video to Reveal this Text or Code Snippet]]

In this code snippet, we create a new CustomEvent named pmds. The second parameter specifies that the event should bubble up through the DOM, and the detail property carries the data you want to pass (such as pmds).

2. Handling the Event in Regular JavaScript

Now that the event is being dispatched, it can be caught by your regular JavaScript. Here’s how you can do that:

Step-by-Step Guide:

Listen for the event in your main JavaScript file like so:

[[See Video to Reveal this Text or Code Snippet]]

This code adds an event listener for the pmds event. When it occurs, it checks if the detail property contains the necessary data and subsequently uses it to populate a jQuery autocomplete field.

Conclusion

By creating a CustomEvent and dispatching it from your VueJs component, you can seamlessly communicate between VueJs and regular JavaScript. Not only does this enhance interaction on your webpage, but it also allows you to leverage VueJs's powerful reactive features alongside traditional JavaScript practices. Implementing this technique can greatly streamline your development process and improve user experience.

Unlock the potential of your applications by mastering the art of event handling between VueJs and regular JavaScript!