When are CORS preflight requests sent by the browser?
- Before making certain types of requests
- After a successful request
- Randomly to check server compatibility
- Only when cookies are involved
CORS preflight requests are sent by the browser before making certain types of requests, specifically those that could have an impact on server security or state. These preflight requests are used to check with the server if the actual request (e.g., a cross-origin POST request with custom headers) is allowed, ensuring server compatibility and security.
Loading...
Related Quiz
- How does npm handle version conflicts between dependencies and devDependencies?
- In JavaScript, the import statement cannot be used in ________.
- What happens when you try to access an index in a buffer that does not exist in Node.js?
- For processing HTTP requests, Express.js allows defining middleware functions at the application level and ______ level.
- What considerations should be made when determining the expiration time of a JWT?