Workshop › Rhythm Lanes › Step 30 of 35

The grade

What we are doing

A chain of thresholds turns the accuracy into a letter: 95 or more is S, 85 an A, 70 a B, 50 a C, and below that a D.

```js
function grade() {
  const a = accuracy()
  return a >= 95 ? 'S' : a >= 85 ? 'A' : a >= 70 ? 'B' : a >= 50 ? 'C' : 'D'
}
```

What it means

• ? : can be chained: the first true condition from the left wins. An accuracy of 90 fails >= 95 and passes >= 85, so it is an A.

Your turn

Write grade above function update() { (under accuracy), with an empty line after it.

Skills: Functions

← Accuracy The results →

All steps

1. A stage for the notes
2. The first lane
3. Four lanes with a loop
4. The hit line
5. A function that draws
6. The song as text
7. From text to notes
8. The clock decides where
9. Draw the notes
10. A clock that ticks
11. The game loop
12. Lanes that light up
13. Keys for the lanes
14. Show the keys
15. Hit the closest note
16. Close enough in time
17. One press, one hit
18. A message on the screen
19. Say Hit
20. Let the message go
21. Perfect or good
22. Keep count
23. Missed notes
24. Score
25. Hits in a row
26. The multiplier
27. The song ends
28. Stop the clock
29. Accuracy
30. The grade
31. The results
32. Play again
33. Best score
34. Lanes you can tap
35. Build it yourself: a speed setting