What are the various functions that an Alert button can serve in Ionic?

What are the potential choices for the role designation of a button within an Alert using the Ionic framework (v5)?

The official documentation only lists cancel: https://ionicframework.com/docs/api/alert#buttons

If desired, a button can have a role property, like cancel.

For instance:

      buttons: [
        {
          text: 'Cancel',
          role: 'cancel',
          cssClass: 'secondary',
          handler: (blah) => {
            console.log('Confirm Cancel: blah');
          }
        }, {
          text: 'Okay',
          handler: () => {
            console.log('Confirm Okay');
          }
        }
      ]

Answer №1

There is only one property in a role, which is 'cancel'.

According to the documentation:

"Optionally, a role property can be added to a button, such as cancel. If a cancel role is on one of the buttons, then if the alert is dismissed by tapping the backdrop, then it will fire the handler from the button with a cancel role."

This means you can handle it when the user dismisses the alert by clicking on the backdrop. If you want to perform an action when the alert is canceled but the user dismisses it by clicking outside (backdrop), you can still manage it.

Answer №2

Upon examining the contents of the alert-interface.ts file, it is evident that the predefined roles are 'cancel' and 'destructive'. However, it also allows for the inclusion of any custom string as a role.

The AlertButton interface consists of properties such as text, role (which can be either 'cancel', 'destructive' or a custom string), cssClass, id, and handler. The handler function can return a boolean, void, or an object with key-value pairs.

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