The Window.confirm()
method displays a modal dialog with an optional message and two buttons, OK and Cancel.
Syntax
result = window.confirm(message);
message
is the optional string to be displayed in the dialog.result
is a boolean value indicating whether OK or Cancel was selected (true
means OK).
Example
if (window.confirm("Do you really want to leave?")) { window.open("exit.html", "Thanks for Visiting!"); }
Produces:
Notes
The following text is shared between this article, DOM:window.prompt and DOM:window.alert Dialog boxes are modal windows - they prevent the user from accessing the rest of the program's interface until the dialog box is closed. For this reason, you should not overuse any function that creates a dialog box (or modal window). And regardless, there are very good reasons to avoid using dialog boxes for confirmation.
Starting with Chrome 46.0 this method is blocked inside an <iframe>
unless it sandbox attribute has the value allow-modal
.
The argument is optional and not required by the spec.
Specification
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'confirm()' in that specification. |
Living Standard |