Auto populate customer URL from Help Scout Custom Field

help-scout-auto-populate-custom-url-field.js

(function(rn) {
  let customerURL;

  const customerURLElt = 
    document.querySelector(`#ex-templateBody td.ex-mcnTextContent table:nth-child(${rn}) tbody tr:nth-child(2) td a`);

  if (customerURLElt) {
    customerURL = customerURLElt.innerText;
  }

  if (!customerURL) return;

  console.log('customerURL', customerURL);

  const targetURLElt = document.querySelector('#custom-url');

  let targetURL = targetURLElt.getAttribute('value').trim();

  console.log('targetURL', targetURL);

  if (targetURL) return;

  targetURLElt.setAttribute('value', customerURL);

  console.log('%cAuto populated URL: %s', 'color:limegreen;font-size:16px', customerURL);
})(4);

/** 
 Change the arg to specify the row that
 the URL is displayed.
 
 Install and run as a Chrome Dev Tools
 saved snippet.
 */