JSFiddle - React, Tailwind, and code Playground

HTML

<html>
  
  <head></head>
  
  <body>
    <input type="image" tabindex="0" onclick="doSomething()" src="http://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/White_and_yellow_flower.JPG/320px-White_and_yellow_flower.JPG" /><br />
    <button tabindex="1">I am focussable too !!!</button>
  </body>

</html>

JavaScript

function doSomething() {
  alert('Hello!'); 
}