Workshop › Rhythm Lanes › Step 17 of 35

One press, one hit

What we are doing

When you hold a key down, the computer repeats the keydown event many times a second. In a rhythm game one press must be one hit, so repeated events are ignored.

```js
document.addEventListener('keydown', (event) => {
  if (event.repeat) return // holding a key down is not a new press
```

What it means

• event.repeat is true for the repeated events of a held key; we return before doing anything.

Your turn

Write the line at the top of the keydown listener.

Skills: Keyboard and mouse input

← Close enough in time A message on the screen →

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