Window: confirm() method
window.confirm() instructs the browser to display a dialog with an optional message, and to wait until the user either confirms or cancels the dialog.
Under some conditions — for example, when the user switches tabs — the browser may not actually display a dialog, or may not wait for the user to confirm or cancel the dialog.
Syntax
confirm(message)
Parameters
message-
A string you want to display in the confirmation dialog.
Return value
A boolean indicating whether OK (true) or Cancel (false) was
selected. If a browser is ignoring in-page dialogs, then the returned value is always
false.
Examples
if (window.confirm("Do you really want to leave?")) {
window.open("exit.html", "Thanks for Visiting!");
}
Produces:
Notes
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). Regardless, there are good reasons to avoid using dialog boxes for confirmation.
Alternatively <dialog> element can be used for confirmations.
Specifications
| Specification |
|---|
| HTML Standard # dom-confirm-dev |
Browser compatibility
BCD tables only load in the browser
See also
<dialog>elementwindow.alert()window.prompt()