Programmatically triggering typeahead.js result display

Question

I am using Twitter\'s typeahead.js (https://github.com/twitter/typeahead.js/) on an input field which is pre filled from a query string. After loading the page, i\'d like to

Answer 1

$(".typeahead").typeahead('lookup').focus();

triggers with existing value of input. you can change the value in advance of course