Home
JS
JS
Tryit: JAVASCRIPT
运行 ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <body> <p>一个无序列表:</p> <ul> <li>咖啡</li> <li>茶</li> <li>牛奶</li> </ul> <p>单击该按钮以显示 UL 元素（索引 3）的 innerHTML。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementsByTagName("*"); document.getElementById("demo").innerHTML = x[3].innerHTML; } </script> </body> </html>