JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.thimbleopensource.com/download/jquery/jquery.filter_input.js"></script>
<div class="culpritClass">
<div class="inner" style="display: block;">
<div class="inner_chat"></div>
<form>
<textarea class="chat_text"></textarea> 
</form>     
</div><a class="culpritClass" href="#">culprit</a>
</div>

JavaScript

$('.chat_text').keypress(function(e) {
    if (e.keyCode == '13') {

        var ru = $(this).closest('.culpritClass').attr('class');

        alert(ru);
    }
});