JSFiddle - React, Tailwind, and code Playground

HTML

<body>
  <button id="parent" onclick="callFn(event, 'parent')">
      <span id="child" onclick="callFn(event, 'child')">Authenticate</span>
  </button>
</body>

JavaScript

window.callFn = function(evt, type) {
	if (type === 'child') {
  	alert(type);
  }
}