Promises and Async/Await

Promises represent future values. The modern async/await syntax lets you write asynchronous code that reads like synchronous code.

Worked example

How it reads

async keyword marks a function as asynchronous
await pauses execution until the promise resolves

Cloud tip: Always wrap your await calls in a try...catch block to handle network errors safely.

index.js

JAVASCRIPT

real JavaScript, runs in your browser

Console

Run your code to see its output here.

YOUR TURN

Make delayedGlow wait 50 milliseconds with setTimeout before resolving, and log ready before awaiting it. The output should be ready then glow.

Press Run to check your work.

Practice this →