Скачать или смотреть How to Prevent Default Behavior and Trigger Form Submit in Vue.js

Learn how to prevent default behavior on form submission with Vue.js while effectively triggering methods using refs.
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This video is based on the question https://stackoverflow.com/q/64205986/ asked by the user 'BT101' ( https://stackoverflow.com/u/11262373/ ) and on the answer https://stackoverflow.com/a/64207883/ provided by the user 'Arslan Butt' ( https://stackoverflow.com/u/2959918/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Mastering Form Submission with Vue.js: Prevent Default and Trigger Submit

When working with forms in Vue.js, you may encounter a common problem: how to handle the submit event properly using @ submit.prevent while also wanting to programmatically trigger a form submission via a button click. This scenario often leads to unexpected behavior, such as the page reloading or the intended submit method not being called.

In this post, we'll explore a solution to this problem, breaking down the necessary steps to achieve the desired functionality.

The Problem Explained

You might have set up a form with a submit handler that is meant to prevent the default action (which is page reload) and log a message when the form is submitted. However, when you click a button intended to trigger the form submission, you may notice two issues:

Page Reload: The page appears to reload as if the prevent functionality did not work.

Method Not Called: The submit method (sub) isn't executed, leaving you wondering why your code isn't functioning as expected.

Solution: Step-by-Step Guide

Using @ submit.prevent with Ref

To solve this issue, we need to ensure that we are correctly using Vue's event handling capabilities. We'll make a few changes to the setup to get the desired functionality working correctly.

Revised HTML Template

Here's a modified version of your original form template:

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

Key Changes Made

Usage of @ click.native.prevent: By adding .native.prevent to the button's click event handler, we ensure that the default button action (submitting the form) is prevented, which helps stop the page from reloading.

Revised Script Section

Your updated Vue component should look like this:

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

Explanation of Code

Form Reference:

The form element is referenced using ref, allowing us to programmatically call the .submit() method.

Preventing Default:

Using @ submit.prevent in the form ensures that the default form submit action does not occur, allowing your custom sub method to be called instead without a page reload.

Button Click:

The button utilizes @ click.native.prevent to prevent its default action of submitting the form directly, allowing the trigger for programmatically calling the form’s submit method.

Conclusion

By implementing these changes in your Vue.js form handling setup, you can effectively manage form submissions without unwanted page reloads while ensuring your defined submit logic is executed. This allows for a smoother user experience and greater control within your application.

Keep experimenting with Vue.js forms and event handling to unlock more advanced features and create dynamic web applications. Happy coding!