Workshop › Typing Rain › Step 31 of 33

Light up the next key

What we are doing

The keyboard also teaches: the key for the next letter of the target lights up yellow. Beginners can follow the light while their fingers learn where the letters are.

```js
const next = target && target.text[typed] === keys[i]
ctx.fillStyle = next ? '#facc15' : '#1e293b'
ctx.fillRect(k.x, k.y, KEY_W, KEY_H)
ctx.fillStyle = next ? '#020617' : '#e2e8f0'
```

What it means

• next is true when there is a target and this key is its next letter. With no target, target && ... stops at null, which counts as false.
• The lit key is yellow with a dark letter.

Your turn

In the keyboard loop, under const k = ..., write const next, and change the two colors as shown.

Skills: Game states

← Draw the keyboard Tap the keys →

All steps

1. A sky for the words
2. The ground
3. A word on the canvas
4. A function that draws
5. A list of words
6. Make them fall
7. The game loop
8. A new word from the list
9. Let it rain
10. Gone past the ground
11. Lock on to a word
12. Listen to the keyboard
13. Letter by letter
14. Half a word in yellow
15. Let go of a lost word
16. Lives
17. Hearts
18. Score
19. Out of lives
20. Freeze the game
21. The game over panel
22. Play again
23. Levels
24. Faster and faster
25. Best score
26. Accuracy
27. Words per minute
28. Your speed at the end
29. Where the keys go
30. Draw the keyboard
31. Light up the next key
32. Tap the keys
33. Build it yourself: change your mind