Workshop › OutRun-style Racer › Step 38 of 44

Best lap

What we are doing

When a lap ends, its time is compared with the best lap so far. Fewer frames is better, so a lap is a record when there is no record yet or it is smaller. The record is saved in localStorage, so it stays after the page is closed.

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

    position -= trackLength
    if (best === 0 || lapTime < best) {
      best = lapTime
      localStorage.setItem('racer-best', best)
    }
    lap += 1
```

What it means

• localStorage.getItem reads the saved text (or null); Number(...) || 0 turns it into a number, or 0 if there is none. 0 means "no record yet".
• || means "or": no record yet, or a faster lap. Then it becomes the best and is saved with setItem.

Your turn

1. Under let lapTime write the best line.
2. In the lap block, between position -= trackLength and lap += 1, write the record if.

Skills: Game states

← Show the time Show the best lap →

All steps

1. Sky and ground
2. Draw again and again
3. Perspective
4. One piece of road
5. A road made of segments
6. Where we are on the track
7. The road ahead
8. Stripes
9. Paint from far to near
10. Kerbs and a center line
11. Striped grass
12. Moving is one number
13. Which keys are down?
14. The gas pedal
15. Brake, coast and a top speed
16. Your car
17. Speedometer
18. A pedal for phones
19. Move the camera sideways
20. Steering
21. No turning on the spot
22. The grass is slow
23. Steering by touch
24. A track with curves
25. Bend the road
26. No jumps in the curve
27. Which segment am I on?
28. Curves pull you outwards
29. Other cars
30. Distance on a loop
31. Cars that shrink with distance
32. Traffic moves
33. Rear-end crash
34. Counting laps
35. Show the lap
36. A lap timer
37. Show the time
38. Best lap
39. Show the best lap
40. Racing or finished
41. The finish line
42. Finished!
43. Race again
44. Build it yourself: beat the clock