Скачать или смотреть How to Use a Global JavaScript Function to Confirm Form Submission in MVC with Bootstrap Modal

Learn how to create a `global JavaScript function` that prevents form submission until a user confirms action via Bootstrap modal. Ideal for MVC Applicatons.
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This video is based on the question https://stackoverflow.com/q/63685888/ asked by the user 'cullimorer' ( https://stackoverflow.com/u/5349719/ ) and on the answer https://stackoverflow.com/a/63701497/ provided by the user 'Dave Barnett' ( https://stackoverflow.com/u/3773983/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Implementing a Global JavaScript Function for Confirming Form Submissions

In web development, especially when working with forms, it's essential to ensure that users are confident in their actions before making significant changes, like deleting accounts. A common issue faced by developers is implementing a confirmation dialog before a form is submitted. If you’re using ASP.NET MVC and Bootstrap modals, this post will guide you through the process of creating a global JavaScript function that prevents a form submit button from executing its action until a confirmation is received from the user.

The Problem: Immediate Submission

In the HTML code for a form submission provided, there is a button labeled "Remove account" which executes an action without waiting for user confirmation. This happens because the form is set to submit immediately when the button is clicked, even before the confirmation dialog is shown to the user.

The user wants a function that allows them to show a modal dialog for confirmation and prevents the form from being submitted until the modal returns a positive response.

The Solution: Using a Modal for Confirmation

Step 1: Update Your Form

To effectively handle user confirmation, we will hide the actual submit button and implement a temporary "fake" button that displays the modal. Here’s how you can alter your form:

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

Step 2: Modify the JavaScript

Next, we need to modify the confirmation dialog function to prevent the default action of the real submit button until the user confirms:

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

Step 3: Enhance Reusability

You can make this method more reusable by allowing the confirmation dialog to be applicable for different submission buttons. This enables the same confirmation logic to be used across various form elements. Modify the button in your HTML file to take in an ID as follows:

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

And adjust the JavaScript accordingly:

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

Conclusion

By following the steps above, you now have a global JavaScript function that effectively prevents form submissions until the user confirms their decision through a Bootstrap modal dialog. This approach not only enhances the user experience but also reduces the chances of accidental submissions leading to undesired outcomes.

Incorporating a confirmation process is key in applications where user actions have significant implications. Now, you can adopt this pattern across your web forms, adding a layer of clarity and assurance for your users.