Using $.triggerQueueCallback

example.js

var $obj = $({});

$obj.bind('myEvent', function( param, callback ) {
  // do stuff
  callback();
});

$obj.bind('myEvent', function( param, callback ) {
  // do stuff
  callback();
});

var data = {
  foo: "bar"
};

$obj.triggerQueueCallback( 'myEvent', data, function() {
  console.log( 'This message will be shown once!' );
});