Home
JS
JS
Tryit: JAVASCRIPT
运行 ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <body> <h3>演示如何访问 P 元素</h3> <p id="myP">我是一个段落。 单击按钮以获取我的 ID。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myP").id; document.getElementById("demo").innerHTML = x; } </script> </body> </html>