delayed query

gistfile1.js

function SearchPlaces(inputSelector) {
  var input = $(inputSelector).hintInput(),
      baseUrl = input.attr('data-source');

  function currentQuery() {
    if (input.hasClass('empty')) {
      return '';
    } else {
      return input.val();
    }
  }

  function runQuery(url) {
	  $('#vote-places-wrap').addClass('loading');
    $.getScript(url);
  }

  function delayAndQuery(query) {
    var queryIfUnchanged = function() {
      if (query == currentQuery()) {
        runQuery(baseUrl + '?q=' + currentQuery())
      }
    };

    setTimeout(queryIfUnchanged, 300);
  }

  var previousQuery = currentQuery();
  setInterval(function() {
    var newQuery = currentQuery();
    if (previousQuery != newQuery) {
      delayAndQuery(newQuery);
      previousQuery = newQuery;
    }
  }, 150);
}