JSFiddle - React, Tailwind, and code Playground
by mavinm
HTML
<div class="hidden class1" id="id">
You have used the id in class 1.
</div>
<div class="hidden class2" id="id">
You have used the id in class 2.
</div>
<div id="result"></div>
JavaScript
$("#result").html($("#id.class2").html());
$(".hidden").hide();