​

function reloadSearch() {

  if(!isLoading){

      var q = $('#q').val();

       if (q.length >= 3) {

          isLoading = true;

           // ajax fetch the data

           $('#searchterms').html("fetching...'" + q + "'");

           // enforce the delay

           setTimeout(function(){

             isLoading=false;

             if(isDirty){

               isDirty = false;

               reloadSearch();

             }

           }, delay);

       }

     }

};

​

var delay = 1000;

var isLoading = false;

var isDirty = false;

$(document).ready(function() {

    reloadSearch();

    $('#q').keyup(function(){

      isDirty = true;

      reloadSearch();

  });

});