javascript - Twitter typeahead default suggestions: how to get the first suggestions in the prefetched array? -

i using twitter typeahead , offer values user when input box gets focus, before typed.

there's example on examples page under default suggestions:

var nflteams = new bloodhound({   datumtokenizer: bloodhound.tokenizers.obj.whitespace('team'),   querytokenizer: bloodhound.tokenizers.whitespace,   identify: function(obj) { return obj.team; },   prefetch: '../data/nfl.json' });  function nflteamswithdefaults(q, sync) {   if (q === '') {     sync(nflteams.get('detroit lions', 'green bay packers', 'chicago bears'));   }    else {     nflteams.search(q, sync);   } }  $('#default-suggestions .typeahead').typeahead({   minlength: 0,   highlight: true }, {   name: 'nfl-teams',   display: 'team',   source: nflteamswithdefaults }); 

however in example, hard-code values want suggest:

      sync(nflteams.get('detroit lions', 'green bay packers', 'chicago bears')); 

in case, use bloodhound pre-fetch, , want suggest first few options returned pre-fetch.

edit: show first few items returned server. server responsible order of showing them. in above example, if data/nfl.json contains:

[ { "team": "san francisco 49ers" }, { "team": "chicago bears" }, { "team": "cincinnati bengals" }, { "team": "buffalo bills" }, { "team": "denver broncos" }, { "team": "cleveland browns" }, ... 

i show whatever first teams are. number of teams shown parameter.

how do that?

for example, want display 2 first items in default

function nflteamswithdefaults(q, sync) {     if (q === '') {         sync(nflteams.all().slice(0, 2)); // slice(start,end)     }     else {         nflteams.search(q, sync);     } }