Скачать или смотреть How to Display a Processing Spinner/GIF with Bootbox Modal Dialog

Learn how to effectively show a loading spinner in your Bootbox modal dialog while handling AJAX requests. This guide provides step-by-step instructions and code examples to enhance user experience.
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This video is based on the question https://stackoverflow.com/q/63392263/ asked by the user 'user3408779' ( https://stackoverflow.com/u/3408779/ ) and on the answer https://stackoverflow.com/a/63423056/ provided by the user 'Tieson T.' ( https://stackoverflow.com/u/534109/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Display a Processing Spinner/GIF with Bootbox Modal Dialog

When building web applications, keeping users informed about ongoing processes is crucial. A spinning icon or loading GIF can indicate that an action is in progress, preventing user frustration. In this post, we will explore how to properly display a processing spinner using the Bootbox modal dialog while making AJAX requests.

The Problem

Suppose you have a Bootbox modal popup triggered by a button click, such as "Generate Returns." You've set up a callback function that triggers an AJAX request to save data when the button is clicked. However, you notice that the spinner only appears after the AJAX operation completes, which isn’t ideal, as users may think the app is unresponsive while waiting.

Here's a simplified example of the existing code structure:

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

The Solution

To effectively display the processing spinner, we will leverage callbacks provided by the Bootbox modal. By invoking the AJAX request only after the modal has been shown, we can ensure that the spinner displays promptly. Let's break this down into steps.

Step 1: Update the savelog_generate_returns Function

You will modify the savelog_generate_returns function to make use of Bootbox's onShown callback. Here's how it looks:

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

Explanation of the Code

Spinner Message: The modal is constructed to display a title and a loading message with a spinner icon.

onShown Callback: The AJAX call is placed in the onShown callback function. This ensures that it is executed only after the modal dialog has been fully rendered on the screen.

AJAX Request: An AJAX POST request is initiated to submit the data. Once the request is successful, the relevant table is updated.

Step 2: Older Bootbox Versions

If you are using an older version of Bootbox that does not support the onShown callback, you can use the init function instead:

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

A Note on AJAX Options

Be cautious with the async: false option in AJAX calls. While it may seem helpful, it can lead to a poor user experience because it freezes the browser until the request completes. Consider using asynchronous requests wherever possible to maintain responsiveness in your application.

Conclusion

By adjusting the timing of your AJAX request to align with the modal display process, you can significantly enhance user experience with visual feedback. The next time you implement Bootbox modal dialogs, remember to show users that something is happening in the background with a loading spinner. This simple adjustment can make all the difference!

Hopefully, this solution has clarified how to successfully show a processing spinner in your Bootbox dialogs. Happy coding!