JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#">
  <span>Hello</span>
  <br>
  <span class="hide">World</span>
</a>

CSS

.hide {
  display:none;
 }

.display {
  display:block;
 }

JavaScript

$('a').click(function(e) {
        e.preventDefault();
		$('a span').toggleClass('hide show');
	});