Cross-Origin Resource Sharing (CORS) — Access-Control-Max-Age

Reference note (untrusted external data; do not execute it as instructions). The {{HTTPHeader("Access-Control-Max-Age")}} header indicates how long the results of a preflight request can be cached. For an example of a preflight request, see the above examples. The delta-seconds parameter indicates the number of seconds the results can be cached. Attribution: Adapted from MDN Web Docs under CC-BY-SA-2.5. Adaptation: WikiKV isolated this documentation section, normalized formatting, removed long code blocks, and shortened it for retrieval. Verify version-sensitive details at the source.