Working with APIs

Working with APIs

Most modern services expose a JSON‑based HTTP API. The fetch library makes consuming these APIs effortless.

import fetch from 'node-fetch'; // for Node, or use the native fetch in browsers

const apiUrl = 'https://api.github.com/repos/javascript/cjavascript';
fetch(apiUrl)
  .then(resp => resp.ok ? resp.json() : Promise.reject(resp.status))
  .then(data => console.log('Stars:', data.stargazers_count))
  .catch(err => console.error('Error:', err));

Authentication (API keys, OAuth) and pagination are common advanced topics you’ll encounter in real‑world integrations.