JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" placeholder='Good Morning'>
<div>hi</div>
<button>hello world</button>
<div>
  <span>百度</span>
</div>
<a href="#">www.baidu.com</a>

CSS

* {
  font-family: Optima;
}

JavaScript

document.addEventListener('keydown', function(e) {
	if(e.keyCode === 9) {
  	console.log(document.activeElement);
  }
})