We have a form with a table and 3 fields in it. One of the fields is a radio button. We are trying to get it setup where if they select a value from the radio button the form will require the text field  to be filled in next to it.

We have tried a few things and haven't had much results. This code is the closest thing I've come up with but it is still not working. Does any one have any ideas?

$(document).ready(function () {
  updatefield();
  
  $('.inspectiontable').change(updatefield);
  
  function updatefield() {
    $('.inspectiontable tbody tr').each(function () {
      var insType = $(this).find('.raiting input:checked').val();
      switch (insType) {
        case "Unsatisfactory":
          $(this).find('.explain input').attr('required', true);
          return;
        default:
          $(this).find('.explain input').removeAttr('required');
          return;
      }
    });
  }
});