How to add a custom message to copy and paste in Webflow

document.addEventListener('copy', function(e) {
  var selected = window.getSelection().toString();
  if (selected.length > 50) {
    var suffix = '

— Source : ' + window.location.href;
    e.clipboardData.setData('text/plain', selected + suffix);
    e.preventDefault();
  }
  console.log('%c Hey, you’re copying! 😄 Come talk to us: gemeos.wf',
    'color: #a78bfa; font-size: 16px; font-weight: bold;');
});