jQuery - Append a Value to a INPUT, keeping it a Comma Delimited list

Question

I have an input like follows:

I\'d like to be able to append a value to th

Answer 1

Just add a conditional when you add the value to the field.

var cur_val = $('#attachment-uuids').val();
if(cur_val)
  $('#attachment-uuids').val(cur_val + "," + new_val);
else
  $('#attachment-uuids').val(new_val);