phonegap android -- back button hides suggestions, or goes back one page, or exits app

gistfile1.js

// doesn't work: when keyboard is shown, back button hides keyboard. hitting back button again exits app w/o triggering this event

    $(document).on('backbutton', function () {
      console.log('back pressed');
      
      if ($.mobile.activePage.find('.suggestions').children().length > 0) {
        console.log('hide suggestions');
        var $input = $.mobile.activePage.find('input');
        $input.val('');
        $input.autocomplete('clear');
        return;
      }

      if ($.mobile.urlHistory.activeIndex > 0) {
        console.log('go back');
        window.history.back();
        return;
      }

      console.log('exit app');
      navigator.app.exitApp();
    });

// better solution

$(window).resize(function () {
  if ($.mobile.activePage) {
    var $input = $.mobile.activePage.find('.search-form input');
    $input.val('');
    $input.autocomplete('clear');
  }
});