From https://www.sitepoint.com/introduction-jquery-deferred-objects/

deferred-timeout.js

function timeout(milliseconds) {
  // Create a new Deferred object
  var deferred = $.Deferred();

  // Resolve the Deferred after the amount of time specified by milliseconds
  setTimeout(deferred.resolve, milliseconds);

  // Return the Deferred's Promise object
  return deferred.promise();
}

timeout(1000).then(function() {
  console.log('I waited for 1 second!');
});