点击运行
<!DOCTYPE html> <html> <body> <h1>通过标签名查找 HTML 元素</h1> <p>Hello World!</p> <p>Hello China!</p> <p>Hello Shanghai!</p> <p id="demo"></p> <script> var myElements = document.getElementsByTagName("p"); document.getElementById("demo").innerHTML = "第三段中的文本是：" + myElements[2].innerHTML; </script> </body> </html>
运行结果
