Introduction to JavaScript confirm() method

To invoke a dialog with a question and two buttons OK and Cancel, you use the confirm() method of the window object:

Code language: JavaScript (javascript)

In this syntax:

• The question is an optional string to display in the dialog.
• The result is a Boolean value indicating whether the OK or Cancel button was clicked. If the OK button is clicked, the result is true; otherwise, the result is false.

Note that if a browser ignores in-page dialogs, then the result is always false.

The confirmation dialog is modal and synchronous. It means that the code execution stops when a dialog is displayed and resumes after it has been dismissed.

The following example uses the confirm() method to invoke a confirmation dialog. Based on the user’s selection, it displays the corresponding message based using the alert() method:

Code language: JavaScript (javascript)

Summary

• The confirm() is a method of the window object.
• The confirm() shows a system dialog that consists of a question and two buttons: OK and Cancel.
• The confirm() returns true if the OK button was clicked or false if the Cancel button was selected.