301 Moved Permanently permanent movement. The requested resource has been permanently moved to the new URI, the return information will include the new URI, and the browser will automatically redirect to the new URI. Any future new requests should be replaced with a new URI
302Found temporary movement. Similar to 301. But resources are only temporarily moved. The client should continue to use the original URI
403Forbidden represents a client error, which refers to the ability of the server side to process the request, but denies access to the authorization.
404Not found server cannot find resources (Web pages) based on client's request. With this code, the Web designer can set up a personalized page that "the resource you requested could not be found"
500Internal Server error Server internal errors, unable to complete request
HTML Learning---HTML status code