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.
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
.
if (window.confirm("Do you really want to leave?")) {
window.open("exit.html", "Thanks for Visiting!");
}
Produces:
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.