点击运行
<!DOCTYPE html> <html> <body> <h1>通过 id 查找 HTML 元素</h1> <p id="id01">Hello World!</p> <p id="id02">Hello China!</p> <p id="id03">Hello Shanghai!</p> <p id="demo"></p> <script> var myElement = document.getElementById("id03"); document.getElementById("demo").innerHTML = "段落 id03 的文本是：" + myElement.innerHTML; </script> </body> </html>
运行结果
