Fetch Standard WHATWG
Methods A method is a byte sequence that matches the method token A CORS safelisted method is a method that is GET HEAD or POST A forbidden method is a method that is a byte case insensitive match for CONNECT TRACE or TRACK [HTTPVERBSEC1] [HTTPVERBSEC2] [HTTPVERBSEC3] To normalize a method if it is a byte case insensitive match for DELETE GET