wpj

That worked, thank you!

@Ian_A — thanks for this solution! I've tried implementing it, but it's not working properly. When I check the console it says "Can't find variable: $".

Here's the code in full I used:

<script>
  $(document).ready(function(){ 
    var timecode = Date.now();
    var subjecttxt = "#" + timecode;
  
  $('form').find("input[type=text], text").each(function()
  {
      if(!$(this).val()) { 
     $(this).attr("value", subjecttxt);
     $(this).attr("readonly", true);
     $(this).css("display","none");
        var val = subjecttxt;
        return ( val !== subjecttxt );
  }
  });
});

  $(document).ready(function(){ 
$('form').find("label[class=title]").each(function()
  {
      if(!$(this).val()) { 
     $(this).css("display","none");
        var val2 = "none";
        return ( val2 !== "none" );
  }
  });
});  
 </script>

Is this still working on your end? Any thoughts would be much appreciated, thank you.