spec/fixtures/pages/tab-focus-loop-elements-wv.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title></title>
  <body>
    <div>
      <button id="wv-element-1">Button 1</button>
      <button id="wv-element-2">Button 2</button>
    </div>
    <script>
      const { ipcRenderer } = require('electron')

      function handleFocusChange(event) {
        if (event.target.tagName) {
          const elementId = event.target.id ? `-${event.target.id}` : ''
          const elementIdentifier = `${event.target.tagName}${elementId}`
          ipcRenderer.send('focus-changed', elementIdentifier)
        }
      }

      addEventListener('focus', handleFocusChange, true)
    </script>
  </body>
</html>