Fetch API and Streaming Cheat Sheet
Build reliable Fetch API clients with honest HTTP handling, CORS and credentials, abortable deadlines, incremental response parsing, and stream backpressure.
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Networking and Offline
Load resources, communicate in real time, and build resilient web applications.
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Networking and Offline cheat sheets
Each guide includes copy-ready syntax, detailed examples, and authoritative references.
HTML Script, Stylesheet, and Resource Loading Cheat Sheet
Load and embed classic scripts, JavaScript modules, stylesheets, fonts, resource hints, priority hints, and deferred embeds with predictable execution and fallback behavior.
Open cheat sheetPush Notifications and App Badging Cheat Sheet
Implement permission-respectful web push, service-worker notifications, click routing, subscription security, and resilient application badges.
Open cheat sheetService Workers and Offline Caching Cheat Sheet
Register scoped service workers, manage install and activation, intercept fetches, build deliberate offline caching strategies, and ship compatible updates safely.
Open cheat sheetWeb Locks and Cross-Tab Coordination Cheat Sheet
Coordinate tabs and workers with scoped Web Locks, bounded acquisition, leader election, messaging, deadlock prevention, and durable storage transactions.
Open cheat sheetWeb Workers and Messaging Cheat Sheet
Run JavaScript off the main thread with dedicated and shared workers, structured cloning, transferable data, MessageChannel ports, lifecycle controls, and error handling.
Open cheat sheetWebRTC Peer Connections Cheat Sheet
Build production WebRTC calls with negotiation, ICE, media transceivers, data channels, TURN, diagnostics, security, and deterministic cleanup.
Open cheat sheetWebSockets and Server-Sent Events Cheat Sheet
Build resilient browser realtime clients with WebSockets or Server-Sent Events, explicit framing, reconnection, flow control, security, and cleanup.
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