Workshop › Hangman › Step 12 of 36

Only letters count

What we are doing

Not every key is a letter: 'Enter', '1', 'Shift'... We guess only when the key is one character long and one of the 26 letters.

```js
const LETTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

  if (letter.length === 1 && LETTERS.includes(letter)) guess(letter)
```

What it means

• LETTERS holds the 26 capital letters.
• letter.length === 1 asks: is it one character long? ('ENTER' is 5.)
• LETTERS.includes(letter) asks: is it one of the 26 letters? ('1' is not.)
• && means "and": both must be true to call guess.

Your turn

1. Under the list's closing ] write the LETTERS line.
2. In the listener, replace guess(letter) with the if line. Press Run.

Skills: Keyboard and mouse input

← Guess with the keyboard Count the misses →

All steps

1. A list of secret words
2. The canvas and the pen
3. Paint the paper
4. A function that draws
5. Pick a random word
6. Write the word
7. Hide it behind blanks
8. Remember the guesses
9. Draw again and again
10. A guess
11. Guess with the keyboard
12. Only letters count
13. Count the misses
14. The same letter twice is free
15. Six misses at most
16. Show the misses
17. List the wrong letters
18. Draw a line
19. The gallows
20. The first miss: a head
21. Body, arms and legs
22. The parts in a list
23. Losing
24. Winning
25. Show the word you missed
26. The end message
27. Play again
28. Never the same word twice
29. A winning streak
30. Remember the best streak
31. Where each key goes
32. Draw the keys
33. Center the last row
34. Keys that remember
35. Tap a key
36. Build it yourself: a hint button