<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>24kcs好帅哦</title> </head> <body> <script> //获取body console.log(document.body);//获取的是元素--标签 //获取title console.log(document.title);//标签中的值 document.title="嘎嘎去"; //获取html console.log(document.documentElement); </script> </body> </html>