When using onBackdropClick in MUI’s Dialog component, the following warning occurred.
The warning message is about the deprecated prop onBackdropClick of the Dialog component. This means that this prop is being used somewhere in your code but is no longer supported or recommended. The warning suggests using the onClose prop instead.
Here is how to resolve this:
Previously, your code may have looked something like this:
Following the warning, you need to update this to use the onClose prop:
In the code above, the onClose prop takes a function that receives two arguments: event and reason. The reason can be ‘backdropClick’, ’escapeKeyDown’, or undefined. By checking whether the reason is ‘backdropClick’, you can execute the handleBackdropClick() function when the user clicks outside the dialog box.
After updating the code as described above, the warning no longer appears.
I hope this serves as a useful reference for others.