JSFiddle - React, Tailwind, and code Playground

by Md Shah

HTML

<label>Are you a student ?</label>
<input type="radio" name="abc" value="yes" />Yes
<input type="radio" name="abc" value="no" />No
<br />
<textarea id="multiTextBox" name="multiTextBox" cols="40" rows="5" disabled="disabled"></textarea>

JavaScript

$(function (e) {
     $('input[name="abc"]').on('change', function () {

         var selectedValue = $(this).val();

         if (selectedValue == 'yes') {
             $('#multiTextBox').removeAttr('disabled');
             $('#multiTextBox').focus();
         } else {
             $('#multiTextBox').attr('disabled', 'disabled');
             $('#multiTextBox').val('N/A');
         }
     });
 });