Cross-Origin Resource Sharing (CORS) is an HTTP-based security mechanism controlled and enforced by the client. It allows a service to indicate any origin other than its own from which the client can request resources. A request may be blocked by CORS policy not only because of the incorrect origin, but also incorrect HTTP header, HTTP method or Cookie header. How to fix CORS error?
Table of contents
What is CORS?What is a CORS preflight?CORS HeadersWhy is request blocked by CORS policy?How to fix CORS error?How to test CORS?Beware of false CORS errorsConclusionResources13 Comments
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