$(document).ready(function() {
  var guestdatefood = $('#guestdatefood');
    guestdatefood.hide();

    $('#gnamedate').keyup(function(){
      if($(this).val() == ''){  
        guestdatefood.hide();
      }else{
        guestdatefood.show();
        }
    });

    $('#gnamedate').keyup(function () {
      $('#gnamedatedisp').text($(this).val());
    });
});

@@ -24,16 +24,19 @@
 ion() %7B%0A
+  %0A
   var gu
@@ -355,12 +355,308 @@
     %7D);%0A
+  %0A  var guest1food = $('#guest1food');%0A    guest1food.hide();%0A  %0A  $('#gname1').keyup(function()%7B%0A    if($(this).val() == '')%7B  %0A      guest1food.hide();%0A    %7Delse%7B%0A      guest1food.show();%0A      %7D%0A  %7D);%0A  %0A  $('#gname1').keyup(function () %7B%0A  %09$('#gname1disp').text($(this).val());%0A  %7D);%0A  %0A  %0A
 %7D);%0A

Update food_rsvp.js