Access-Control-Request-Method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The HTTP Access-Control-Request-Method
request header is used by browsers when issuing a preflight request to let the server know which HTTP method will be used when the actual request is made.
This header is necessary because the preflight request is always an OPTIONS
and doesn't use the same method as the actual request.
Header type | Request header |
---|---|
Forbidden header name | Yes |
Syntax
http
Access-Control-Request-Method: <method>
Directives
<method>
-
An HTTP request method; for example,
GET
,POST
, orDELETE
.
Examples
http
Access-Control-Request-Method: POST
Specifications
Specification |
---|
Fetch Standard # http-access-control-request-method |
Browser compatibility
BCD tables only load in the browser