JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <div>
    Some message over here
   </div>
   <div style = "height:10px;"> <a id = "post_id_1" class = "showReply" href = "#">Reply</a></div>
<div id="replymsgbox" style="display: none;">
    <form id="frmComment" novalidate="novalidate" method="POST" name="frmComment">
        <div>
            <textarea id="comment_text" class="" name="comment[text]"></textarea>
            <div id="error_text"> </div>
        </div>
        <div>      
            <input type="submit" value="Post" name="Submit">
        </div>
    </form>
</div>     
</div>

JavaScript

$('a.showReply').click(function(e){ 

$('#replymsgbox').slideToggle('fast')

});