CORS OPTIONS

CORS OPTIONS

A CORS preflight request is a CORS request that checks to see if the CORS protocol is understood and a server is aware using specific methods and headers.

https://developer.mozilla.org/en-US/docs/Glossary/Preflight_request

https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

same-origin policy

https://developer.mozilla.org/en-US/docs/Web/Security/Same-origin_policy

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cookie & Fetch & credentials & POST

https://www.cnblogs.com/xgqfrms/p/9182177.html

https://www.cnblogs.com/xgqfrms/protected/p/9198180.html

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