Workshop › Asteroids › Step 38 of 41

Best score

What we are doing

When the game ends with a higher score than ever, it becomes the best and is saved in localStorage, the browser's small notebook that keeps its contents after the page is closed.

```js
let best = Number(localStorage.getItem('asteroids-best')) || 0

  if (score > best) {
    best = score
    localStorage.setItem('asteroids-best', best)
  }
```

What it means

• getItem reads the saved text (or null); Number(...) || 0 turns it into a number, or 0 when there is none.
• At game over, a higher score becomes best and is saved with setItem.

Your turn

1. Under let now = 0 write the best line.
2. In crash, under state = 'over', write the record if.

Skills: Game states

← Game over GAME OVER →

All steps

1. Black space
2. Where the ship is
3. Which way it points
4. A triangle ship
5. Which keys are down?
6. Turning
7. The game loop
8. Thrust and drift
9. A little friction
10. A speed limit
11. Around the screen
12. Making a bullet
13. Fire!
14. Bullets fly
15. A lifetime for bullets
16. Making a rock
17. Four big rocks
18. Drawing the rocks
19. Jagged rocks
20. Drifting rocks
21. When do two circles touch?
22. Breaking a rock
23. Bullets hit rocks
24. Points
25. Show the score
26. Losing a life
27. A rock hits the ship
28. Show the lives
29. What time is it?
30. A moment of safety
31. Blink while safe
32. Waves of rocks
33. The next wave
34. Faster every wave
35. One function to start
36. Playing or over
37. Game over
38. Best score
39. GAME OVER
40. Play again
41. Build it yourself: hyperspace