JSFiddle - React, Tailwind, and code Playground

HTML

<div class="randomclass" data-chattingto="cheesecake">cheesecake</div>
<div class="randomclass" data-chattingto="milkshake">milkshake</div>
<div class="randomclass" data-chattingto="cheesecake">cheesecake</div>
<div class="randomclass" data-chattingto="milkshake">milkshake</div>
<br />
<input type="button" id="toggleCheesecake" value="Toggle CheeseCake" />

JavaScript

$("#toggleCheesecake").click(function(){
    $('div[data-chattingto="cheesecake"]').toggle();
});