Window confirm()
Examples
Display a confirmation box:
confirm("Press a button!");
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Confirmation box with line-breaks:
confirm("Press a button!\nEither OK or Cancel.");
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More examples below.
Definition and Usage
The confirm() method displays a dialog box with a message, an OK button, and a Cancel button.
The confirm() method returns true
if the user clicked "OK", otherwise false.
Note
A confirm box is often used if you want the user to verify or accept something.
A confirm box takes the focus away from the current window, and forces the user to read the message.
Do not overuse this method. It prevents the user from accessing other parts of the page until the box is closed.
See Also:
Syntax
confirm(message)
Parameters
| Parameter | Description |
| message | Optional. The text to display in the confirm box. |
Return Value
| Type | Description |
| A boolean | true if the user clicked OK,
otherwise false. |
More Examples
Display a confirmation box, and output what the user clicked:
let text;
if (confirm("Press a button!") == true) {
text = "You pressed OK!";
} else {
text = "You canceled!";
}
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Browser Support
confirm() is supported in all browsers:
| Chrome | IE | Edge | Firefox | Safari | Opera |
| Yes | Yes | Yes | Yes | Yes | Yes |
