Working with APIs

Communicating with servers, fetching and sending data.

What Is an API and REST

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The JSON Data Format

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Fetch: Getting Data (GET)

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Fetch: Sending Data (POST)

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Headers and Authentication

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CORS: Why the Browser Blocks Requests

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WebSocket: Real-Time Communication

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Practice: Building a Weather App

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Working with URLs and Query Parameters

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FormData: Uploading Forms and Files

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SSE: Server-Sent Events

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Long Polling: When All Else Fails

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Resilient Fetch: Retry and Timeout

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