Object JavaScript - Deferred in jQuery

ojs-sampledeferred.js

$('#result').html('waiting...');
 
var pro = wait();
pro.done(result);
 
function result() {
  $('#result').html('done');
}
 
function wait() {
  var deferred = $.Deferred();
 
  setTimeout(function() {
    deferred.resolve();
  }, 2000);
 
  return deferred.promise();
}