title: How to get specific part of url string?
body: <p>This is the result of the <code>console.log</code> below:</p>
  
  <pre><code>console.log('subscribe:', event.url);
  "https://hooks.stripe.com/adapter/ideal/redirect/complete/src_1E2lmZHazFCzVZTmhYOsoZbg/src_client_secret_EVnN8bitF0wDIe6XGcZTThYZ?success=true"
  </code></pre>
  
  <p>Where I want to strip <code>src_1E2lmZHazFCzVZTmhYOsoZbg</code> and <code>src_client_secret_EVnN8bitF0wDIe6XGcZTThYZ</code></p>
  
  <p>How to achieve this?</p>