Differences between setTimeout() and setInterval()?

Answer out loud or in your head first, then compare.

Answer

setTimeout:

JavaScript

setTimeout(() => {
  console.log("Hello");
}, 1000);

runs the callback once.

setInterval:

JavaScript

const id = setInterval(() => {
  console.log("Hello");
}, 1000);

runs it repeatedly.

Stopping it:

JavaScript

clearInterval(id);

Pitfall:
1000 ms is a minimum delay, not a guarantee of the exact moment it runs.

How did it go? Be honest — “Not yet” puts the question on your review list.