JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<i class="fab" data-loopnr=".2">jj</i>

<br>
<div id="fn" class="2" style="display: none;">First Name :
  <input type="text" />
</div>
<script>

    jQuery('.fab').on('click', function() {
        var loop_nr = jQuery(this).data('loopnr');
        jQuery(loop_nr).show();
    });
</script>