Window.confirm()
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
result = window.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
.
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). Regardless, there are good reasons to avoid using dialog boxes for confirmation.
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'confirm()' in that specification. |
Living Standard |
Browser compatibility
BCD tables only load in the browser