<!DOCTYPE html> <!-- Any copyright is dedicated to the Public Domain. - http://creativecommons.org/publicdomain/zero/1.0/ --> <html class="reftest-wait"> <script> function runTest() { // Dispatch 'return' key on second summary should not collapse details. var summary = document.getElementById("summary"); summary.dispatchEvent(new KeyboardEvent("keypress", {"keyCode": 13})); document.documentElement.removeAttribute("class"); } </script> <body onload="runTest();"> <details open> <summary>Summary</summary> <summary id="summary">Second Summary</summary> <p>This is the details.</p> </details> </body> </html>