Mainly uses some methods and properties of XMLHTTP to obtain information of the server. The XMLHTTP object method and object properties are attached to the following documents: http://www.9cbs.net/develop/Article/16/16493.SHTM About the status code, you can see my document "Internet HTTP connection, etc. Daquan "http://www.9cbs.net/develop/Article/16/16477.shtm
The following is all source code:
Using XMLHTTP detection URL and detection server type title>