JS in document. The difference between URL and windows.location.href _javascript tips

Document refers to a documentation object that Windows represents as a Window object.
There can be a lot of document objects under a window. Each document has a URL.

But that's not all the difference. When you CTRL + F5 a link http://www.jb51.net/#server
Print alert (document. URL); and alert (WINDOWS.LOCATION.HREF);
Found that these two values are not the same,

Document. url:http://www.jb51.net/
windows.location.href:http://www.jb51.net/#server

Therefore, if you want to use fragment to handle the corresponding, it is best to use Windows.location.href
Otherwise, there will be a strange mistake.