id不是设置样式用的吗?获取了有什么用?
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>document.getElementById</title> <style> #con{ color:#00ffdd } </style> </head> <body> <p id="con">JavaScript</p> <script type="text/javascript"> var mychar= document.getElementById("con") ; document.write("结果:"+mychar); //输出获取的P标签。 </script> </body> </html>