JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://getfirebug.com/firebug-lite-debug.js"></script>
<a href="#">test</a>
JavaScript
console.log("nonexistent: ", $("a").attr("nonexistent"));
<script src="http://getfirebug.com/firebug-lite-debug.js"></script>
<a href="#">test</a>
console.log("nonexistent: ", $("a").attr("nonexistent"));