W3School TIY
编辑您的代码：
<!DOCTYPE html> <html> <body> <h3>演示如何访问 DETAILS 元素</h3> <p>点击按钮来创建 DETAILS 元素。</p> <button onclick="myFunction()">试一下</button> <script> function myFunction() { var x = document.createElement("DETAILS"); var t = document.createTextNode("Some additional details..."); x.appendChild(t); document.body.appendChild(x); } </script> </body> </html>
查看结果: