一、显示信息的命令
1: <!DOCTYPE html>
2: <html>
3: <head>
4: <title>常用console命令</title>
5: <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
6: </head>
7: <body>
8: <script type="text/javascript">
9: console.log('hello');
10: console.info('信息');
11: console.error('错误');
12: console.warn('警告');
13: </script>
14: </body>
15: </html>
1: <!DOCTYPE html>
2: <html>
