Progressive Enhancement for "add another"

• One strategy would be to hide the "Add Another" button and make it visible through JavaScript.
• Alternatively, we could create the "Add Another" node in JS and then adding it to the page via JS.

$(document).ready(function() {
  $('#addphone').css('display','inline');
  var numberofphones = 1;
  $('#addphone').click(function() {
      numberofphones++;
      newid = 'phone' + numberofphones;
      $('#phone1').clone().attr('id',newid).insertBefore('#addphone');
  });
 });

A browser with JS disabled would display form with a single phone field.

Example: add_another_unobtrusive.html
With JavaScript disabled in browser: