The Javascript confirmation dialog box is used to display a message to the user to confirm something.
Note: Confirmation dialog box gives two buttons “OK” and “Cancel”. The confirm() method returns true if the OK button is clicked else returns false.
Example:
<!DOCTYPE html> <html> <body> <script> function getConfirmation(){ var retVal = confirm("Do you want to continue?"); if( retVal == true ){ document.write ("User wants to continue!"); return true; } else{ document.write ("User does not want to continue!"); return false; } } </script> <p>Click Submit button and see result.</p> <form> <input type="button" onclick="getConfirmation()" value="Submit" /> </form> </body> </html>