JavaScript Async

Async / Await with Real APIs

async/await wraps Promises so you can write sequential code that waits on network I/O — fetching weather, playlists, or payment status.

Note: The weather sandbox simulates real-world failures: ~1 in 3 requests returns HTTP 503. Run multiple times to see error handling in action.

JAVASCRIPT

async function fetchWeather(city) {
  const res = await fetch(
    `https://api.openweathermap.org/data/2.5/weather?q=${city}&units=metric&appid=demo`
  );
  if (!res.ok) throw new Error(`HTTP ${res.status}`);
  return res.json();
}

Fetch weather — handles API failuresOpenWeatherMap API (sandbox)

Console

// Click Run — watch API traces and console output

Video lesson

Async / Await with Real APIs

Console