Dialog Boxes are small windows on the screen. These boxes are used to display some messages on the screen.
1. Alert – It will display an alert dialog box that presents a message to the user and also there is a button on the dialog box and that button is OK button.
2. Confirm – It will display a message on the dialog box but with two button one is OK and other is Cancel.
3. Prompt – This dialog box is used to take an input from the user. It has a message with one align.