JSFiddle - React, Tailwind, and code Playground

HTML

<html> 
<body> 
  <p id="hello">Hello World</p> 
</body> 
</html>

JavaScript

var elem = $("#hello");
elem.attr("foo", "bar");
elem.attr("empty", "");


alert(elem.is("[foo]")); // true on IE, true on Chrome
alert(elem.is("[empty]")); // false on IE, true on Chrome