JSFiddle - React, Tailwind, and code Playground

HTML

<input class="radio" name="radio" type="radio">Radio 1
<input class="radio" name="radio" type="radio">Radio 2
<br>Field 1
<input class="fields" disabled="disabled" name="field1" type="text">
<br>Field 2
<input class="fields" disabled="disabled" name="field2" type="text">
<br>Field 3
<select class="fields" disabled="disabled" name="field3" type="select">
    <option>Test 1</option>
</select>

JavaScript

$('.radio').change(function(){
  alert("changed");
  $('.fields').removeAttr('disabled');
  $(this).off('change');
});