16 topics

Web platform

Browser JavaScript, HTTP caching, WebAssembly, workers and local storage.

Chat with the Web platform assistantStart with: Service worker, Event loop, WebAssembly

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AbortControllerAbortController signals cancellation to operations that support AbortSignal, including fetch. Cancellation is cooperative.
Accessible formAn accessible form gives controls meaningful labels, supports keyboard use, and exposes feedback without relying only on color.

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Cache strategiesA cache strategy chooses when to read stored responses and when to request fresh content. Different assets need different freshness rules.
Content Security PolicyContent Security Policy restricts which sources and execution forms a page may use. It can reduce the impact of script injection.
Cross-origin isolationCross-origin isolation is a browser state enabled by compatible opener and embedder policies. It allows capabilities such as shared memory…

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Event loopThe browser event loop coordinates tasks, microtasks, and rendering opportunities. Long-running JavaScript can delay user input and…

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HTTP cachingHTTP caching uses response headers and validators to control reuse by browsers and intermediaries. It is separate from service-worker…

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IndexedDBIndexedDB is an asynchronous transactional database for structured browser data. It supports keys, indexes, and large records.

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Linear memoryWebAssembly linear memory is a byte-addressed buffer accessed from JavaScript through typed-array views. Its bounds are checked by the…

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Responsive layoutResponsive layout adapts to available space, input methods, and user settings. It includes content behavior as well as breakpoints.

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Service workerA service worker is an event-driven script that can intercept requests within its scope and support offline behavior. It is separate from…

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Transferable objectsTransferable objects allow ownership of a resource such as an ArrayBuffer to move between contexts without copying the buffer contents.

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