You are here: Reference > JavaScript > client-side > dialog > methods > confirm (window)

confirm method (window)

Browser support:
Displays a confirmation dialog with a message that the user needs to respond to.
The confirmation dialog contains an OK and a Cancel button. Script execution does not continue until the confirm method returns (the user presses the OK or Cancel button or closes the confirmation dialog).
  • To display a notification dialog, use the alert method.
  • To display a prompt dialog, use the prompt method.


object.confirm ([message]);
You can find the related objects in the Supported by objects section below.


Optional. String that specifies the text for the message in the dialog box. Default is an empty string. This parameter is required in Firefox.

Return value:

Boolean. One of the following values:
false The confirmation dialog was closed by the Cancel button or by the system Close button.
true The confirmation dialog was closed by the OK button.

Example HTML code 1:

This example illustrates the use of the confirm method:
    <script type="text/javascript">
        function CanContinue () {
            var confRet = window.confirm ("Do you want to continue the operation?");
            if (confRet) {
                alert ("The operation is continued.");
            else {
                alert ("The operation is stopped.");
    <button onclick="CanContinue ()">Create a confirmation dialog</button>
Did you find this example helpful? yes no

Supported by objects:

Related pages:

External links:

User Contributed Comments

Post Content

Post Content