setTimeout(), setInterval(), and requestAnimationFrame()

let timeoutId = setTimeout(() => console.log('Hello'), 1000);
clearTimeout(timeoutId);

The timeout still executes but is delayed
The timeout is canceled and never executes
When clearTimeout is called: 1) The scheduled callback is completely canceled, 2) No error is thrown, 3) The callback will never execute, 4) The timeoutId becomes invalid but retains its value, 5) Multiple clearTimeout calls on the same ID are safe, 6) Memory allocated for the callback is freed.
The timeout executes immediately
A runtime error occurs