Solving the @ change Event Issue in Bootstrap-Vue and Vue Router: Accessing event.target

Описание: Learn how to access event properties in Bootstrap-Vue when using the `@ change` event with a simple solution.
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This video is based on the question https://stackoverflow.com/q/64079493/ asked by the user 'Pekehata' ( https://stackoverflow.com/u/5688890/ ) and on the answer https://stackoverflow.com/a/64080111/ provided by the user 'Heri Hehe Setiawan' ( https://stackoverflow.com/u/670855/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving the @ change Event Issue in Bootstrap-Vue and Vue Router: Accessing event.target

When working with modern web frameworks like Vue.js, developers often encounter challenges that can be puzzling—such is the case with the @ change event in Bootstrap-Vue. If you’re utilizing @ change to capture form input changes but running into issues accessing properties like event.target, you’re not alone. In this post, we’ll tackle the specific problem of accessing event.target from @ change in Bootstrap-Vue and provide a clear solution.

The Problem at Hand

You may be using Bootstrap-Vue to create a form component. In this scenario, you set up a select input with the @ change event, expecting to retrieve more than just the selected option value. This is what the initial code may look like:

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

However, within the associated method, when you attempt to access event.target, you might have noticed the following frustrating issue:

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

In this case, $event is only providing the selected value, with no additional properties like target. This can lead to confusion and hinder your ability to manipulate the DOM as required.

Understanding the Root Cause

The reason you're unable to access event.target lies in how Bootstrap-Vue handles events. When using @ change, Bootstrap-Vue sends a simplified version of the event that contains only the selected value. This is helpful for quick data retrieval, but it can be limiting when you need full access to the original event object.

What We Want to Achieve

Our goal is to access the full event object so we can utilize its properties, including target, to manage our application's behavior more effectively.

The Solution: Using the Native Event Listener

Fortunately, there's an easy fix to this issue by leveraging Vue's native event listeners. By modifying the event binding in your component, you can directly tap into the native change event, which retains access to the full event object. Here’s how to do it:

Step-by-Step Implementation

Modify the Event Binding:
Replace the @ change directive with @ change.native, as shown below:

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

Update Your Method:
Now, you can continue to use your test method without additional changes, since it will receive the original event object:

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

Conclusion

Using @ change.native is a straightforward solution for accessing the full event properties in Bootstrap-Vue's form components. This approach allows you to manipulate the value and properties you need to enhance user interaction within your application effectively. If you run into similar issues in the future, remember this principle of leveraging native event listeners to gain access to the complete event object.

By addressing the original problem and offering a clear solution, we hope this post has made your development process smoother. Happy coding!