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Learn how to keep SweetAlert2 dialogs from dismissing using effective solutions and alternatives.
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How to Prevent SweetAlert2 from Closing with async Functionality

When working with SweetAlert2, a popular JavaScript library for beautiful alerts, you might find yourself in a situation where you want to keep a dialog from closing. This is often needed when you want to ensure that the user has completed certain actions or acknowledged important information before dismissing the alert. However, the built-in willClose functionality cannot be used to prevent the closing of the dialog. In this guide, we will explore a solution to this problem using alternative methods available in SweetAlert2.

The Challenge: How Do You Keep a Dialog Open?

Imagine creating a confirmation dialog that prompts users to confirm their choices. If they try to dismiss the dialog prematurely—perhaps by clicking outside it or on the escape key—you want to ensure they have completed the necessary actions. Unfortunately, the willClose hook in SweetAlert2 does not allow for preventing the dialog from closing. Thus, you are left wondering if there's a way to elegantly handle this scenario.

The Solution: Using Pre-Confirmation and Button Option Hooks

Although you cannot prevent the dialog from closing using willClose, SweetAlert2 provides some alternatives that can help you achieve the desired effect. Instead of relying on willClose, you should leverage the preConfirm and preDeny functions. Here’s how you can implement this solution:

Step-by-Step Implementation

Set up your SweetAlert dialog: Begin by creating your SweetAlert dialog using the Swal.fire() method.

Use preConfirm and preDeny: These functions allow you to execute logic before the dialog is confirmed or denied. You can include checks to determine whether it’s appropriate to allow closing the dialog.

Here’s a code snippet to illustrate this:

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

Key Parameters Explained

showDenyButton: This option allows users to deny their action, providing a clear interactive element.

allowOutsideClick: Set this to false to prevent the dialog from closing when the user clicks outside of it.

allowEscapeKey: Set to false so that pressing the escape key does not dismiss the dialog.

preConfirm and preDeny functions: Add your custom logic here to dictate whether the dialog should close or not based on user input or other conditions.

Conclusion

In conclusion, while it’s not possible to prevent a SweetAlert2 dialog from closing with the willClose callback, you can effectively manage dialog interactions using preConfirm and preDeny. These methods allow you to implement your logic for maintaining the dialog's open state and ensuring users provide necessary confirmations or inputs before proceeding. Use these techniques to enhance user experience and prevent unintentional closures!

Feel free to utilize this guide to implement dialogs that cater to your application's needs. Happy coding!