JSFiddle - React, Tailwind, and code Playground

HTML

<input id="testme" test="something"/><label test="something2"></label>
<link rel="stylesheet" href="http://jqueryui.com/themes/base/jquery.ui.all.css">
<script src="http://jqueryui.com/ui/jquery.ui.core.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.widget.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.button.js"></script>
<link rel="stylesheet" href="http://jqueryui.com/demos.css">

JavaScript

alert($("[test]").each($(this).attr("test")));