Slash "/" at the end of the URL

When entering a URL, such as entering "http://www.xxx.com/", the trailing slash at the end of this URL is critical. Because in this case, the browser can safely add slashes. And the address like "Http://www.xxx.com/FolderOrFile", because the browser is not clear whether Folderorfile is a folder or a file, so you cannot automatically add a slash. At this point, the browser directly accesses the address without a slash, and the server responds to a redirect of 301, or is considered a different URL.

Slash "/" at the end of the URL