JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.6.1/clipboard.min.js"></script>
<button class="btn" id="copy-button" data-clipboard-target="#landingpage">Copy Content</button>

<div id="landingpage">
  Target
</div>

JavaScript

$(function() {
  var $btnCopy = $('#copy-button');

  $btnCopy.on('click', function() {
    var clipboard = new Clipboard('#copy-button');

    clipboard.on('success', function(e) {
      $btnCopy.text('Copied');

      setTimeout(function() {
        $btnCopy.text('Copy');
      }, 2000);
    });
  });
});