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17. Fetch API

Modern HTTP client in browsers and Node.js.

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`fetch` returns a Promise for a `Response`. It does not reject on 4xx/5xx HTTP status codes; developers must explicitly check `response.ok`.

js
const res = await fetch("[https://api.example.com](https://api.example.com)");
if (!res.ok) throw new Error(`HTTP error ${res.status}`);
const data = await res.json();

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Check your understanding

  1. 1. Does fetch reject on a 404 response?

  2. 2. What does response.json() return?

  3. 3. Which method is used for JSON-RPC requests?

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