document.write的用处
document.write -----能够直接在文档流中写入字符串 <!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> </head> <body> <h1>dan</h1> <script> document.write('<p>Good boy dan</p>'); </script> <h2>Name:dan</h2> </body> </html> 结果显示:======》 dan Good boy dan Name:dan
执行玩代码之后检查浏览器html会发现自动插入了P标签