Workshop › Sudoku › Step 5 of 28

Keep drawing

What we are doing

The board will change as you play, so it is redrawn every frame by a loop.

```js
function loop() {
  draw()
  requestAnimationFrame(loop)
}

reset()
requestAnimationFrame(loop)
```

What it means

• requestAnimationFrame(loop) runs loop again before the next screen refresh, about 60 times a second.

Your turn

Replace the draw() call at the bottom with loop and requestAnimationFrame(loop).

Skills: The game loop

← The puzzle's own digits The selected cell →

All steps

1. Nine by nine
2. Lines and boxes
3. A puzzle from a string
4. The puzzle's own digits
5. Keep drawing
6. The selected cell
7. Light up row, column and box
8. The same digit everywhere
9. Click to select
10. Move with the arrows
11. Write digits
12. The three rules in one loop
13. Show mistakes
14. Solved!
15. A clock
16. The solved message
17. Play again
18. The easiest cell
19. The solver
20. Random order
21. Invent a puzzle
22. A new puzzle every game
23. Hints
24. Best time
25. N for a new puzzle
26. A number pad
27. Tap the pad
28. Build it yourself: undo