Скачать или смотреть How to Fix Vue 3 Radio Input Not Checked After Click

Learn how to resolve the issue of radio buttons not checking in Vue 3 with a simple fix using the @ change directive.
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Troubleshooting Vue 3: Radio Input Not Checked After Click

When working with forms in Vue 3, you may encounter a frustrating issue: radio buttons not being checked after selection. This problem often arises when using the @ click.prevent directive, leading to an unclear user experience when attempting to submit answers. In this guide, we will explore the specifics of this issue and present a straightforward solution to get your radio buttons functioning correctly.

Understanding the Problem

Radio buttons allow users to select one option from a set, and typically only one option should be checked at any given time. In the provided example, the radio buttons are part of a form where users select answers to a series of questions. However, after clicking on a radio button:

The clicked button does not remain checked.

The other options cannot be disabled, preventing the form from functioning as intended.

This leads to confusion, as users are unable to see which option they selected.

Typical Code Structure

Here’s a brief look at the provided Vue component structure:

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

The radio input is tied to a model property called answers, which is updated when the user clicks on an input. However, the use of @ click.prevent interrupts the default behavior that allows the browser to manage the radio button states.

The Solution

The good news is that there’s a simple solution to this problem! Instead of using @ click.prevent, you can switch to the @ change event. This event is fired when the radio button's state changes and is the appropriate choice for handling form input. Here’s how you can implement the fix:

Step-by-Step Update

Replace @ click.prevent with @ change: Simply change the directive in your radio input code to @ change and call the updateAnswers method as shown below:

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

Keep the updateAnswers method intact: You don’t need to modify the updateAnswers method in your JavaScript code. It already handles adding the clicked answer value to the array:

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

Test your form: After making these changes, your form should now allow users to click on a radio button, which will become checked appropriately, while preventing the selection of other radio buttons within the same group.

Conclusion

By switching from @ click.prevent to @ change, you ensure that your radio buttons behave as intended in Vue 3. This small adjustment resolves the issue of the radio input not being checked after a user clicks on it and allows users to interact smoothly with your forms. Don't hesitate to apply this fix to your Vue applications, and enhance user experience with functional radio buttons!

If you have any more questions or need further assistance with Vue 3 or similar issues, feel free to reach out, and happy coding!