Spot the bug - #79

programming web dev
1

Find the bug in this animation loop.

let x = 0;
function tick() {
  x + 2;
  requestAnimationFrame(tick);
}
tick();

Reply with what is broken and how you would fix it.

2

x + 2; is a no-op — it calculates a value and then immediately tosses it, so x never changes.

Fix is just making it an assignment: x += 2; (or x = x + 2;) inside tick() so it actually increments every frame.