jquery - Can this function be done with names rather than IDs?

I came across a function that does exactly what I need to do in my questionnaire, but it operates using an ID and I need to do it by name.

here's the fiddle for it https://jsfiddle.net/HGtmR/4/

    var cloneCount = 1;;
   $("button").click(function(){
      $('#id')
          .clone()
          .attr('id', 'id'+ cloneCount++)

          .insertAfter($('[id^=id]:last'))
          .text('id ' + (cloneCount-1)); //<--For DEMO
   });

Here's a fiddle to the section of my form that I'd like to apply it to https://jsfiddle.net/6djnv9u2/7/