How to submit the form after n-seconds?

How can I warn the user before submitting the form?

$('form').on('submit', function(event) { event.preventDefault(); // kill the event(data not sent) var form = this; console.log('do validation of the fields'); console.log('or hang timeout'); console.log('or show something to the user'); console.log('doing anything'); form.submit(); // and then send the data });