https://foxipa.com/en/web-apis/exercise/quiz/beacon/ Twelve module-level quizzes covering the full Beacon API series — from the fire-and-forget landscape through the 64 KiB quota, hybrid transports, and fetchLater(). Hugo en-US https://foxipa.com/en/web-apis/exercise/quiz/beacon/beacon-landscape/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/beacon-landscape/ Why sendBeacon exists, what the spec actually says, how it maps onto fetch, and where browsers stand in 2026. https://foxipa.com/en/web-apis/exercise/quiz/beacon/sendbeacon-core/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/sendbeacon-core/ The sendBeacon signature: POST-only, the queueing boolean, silent CORS drops, and the Window-only rule. https://foxipa.com/en/web-apis/exercise/quiz/beacon/beacon-data-types/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/beacon-data-types/ BodyInit types, Content-Type auto-derivation, and the no-cors/cors mode switch behind the JSON-Blob trap. https://foxipa.com/en/web-apis/exercise/quiz/beacon/beacon-quota/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/beacon-quota/ One shared in-flight pool, what the quota actually charges, in-flight vs lifetime, and the false return. https://foxipa.com/en/web-apis/exercise/quiz/beacon/page-lifecycle/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/page-lifecycle/ The hidden state transition, event ordering, unload deprecation, bfcache, and the mobile reality. https://foxipa.com/en/web-apis/exercise/quiz/beacon/beacon-cors/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/beacon-cors/ Credentialed beacons, the three response headers, Safari ITP, and preflight failures you never hear about. https://foxipa.com/en/web-apis/exercise/quiz/beacon/worker-context/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/worker-context/ Why sendBeacon is Window-only, how Service Workers intercept beacons, and the worker-safe substitute. https://foxipa.com/en/web-apis/exercise/quiz/beacon/fetch-keepalive/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/fetch-keepalive/ The functional superset: what it adds, what it lacks, the shared quota, and promise vs boolean. https://foxipa.com/en/web-apis/exercise/quiz/beacon/hybrid-transport/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/hybrid-transport/ Choosing between sendBeacon and fetch(keepalive), the hybrid pattern, and the shared-quota trap. https://foxipa.com/en/web-apis/exercise/quiz/beacon/real-world-patterns/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/real-world-patterns/ Pageviews, JSON error reports, crash reporting, bfcache analytics, A/B persistence, and the SDK layer. https://foxipa.com/en/web-apis/exercise/quiz/beacon/deferred-fetch/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/deferred-fetch/ The newest transport: the deferred-fetch quota, the activation triggers, activateAfter, and when it complements sendBeacon. https://foxipa.com/en/web-apis/exercise/quiz/beacon/testing-future/ https://foxipa.com/en/web-apis/exercise/quiz/beacon/testing-future/ Playwright interception, DevTools' missing beacon filter, quota testing, lifecycle timing, and what comes next.