Wrap setTimeout in a Deferred

wait.js

$.wait = function(delay, context){
  var deferred = $.Deferred();
  var timer = setTimeout(function(){
    deferred.resolveWith(context || deferred);
  }, delay);
  deferred.fail(function(){
    clearTimeout(timer);
  });
  return deferred;
};

// how to use:
$.wait(1250).then(function(){
  // your code goes here
})