messages.html 355 B

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  1. <!DOCTYPE html>
  2. <script>
  3. var messages = [];
  4. window.addEventListener('message', function(e) {
  5. var message = JSON.stringify(e.data);
  6. messages.push(message);
  7. var pre = document.createElement('pre');
  8. pre.style.margin = 0;
  9. pre.style.padding = 0;
  10. pre.textContent = message;
  11. document.body.appendChild(pre);
  12. }, true);
  13. </script>