Workshop › Tic-tac-toe › Step 11 of 33

A color for each mark

What we are doing

X is pink and O is blue. The color now depends on the mark, so it moves inside the loop and is picked with a short question: condition ? yes : no.

```js
board.forEach((mark, index) => {
  if (mark === '') return
  ctx.fillStyle = mark === 'X' ? '#f38ba8' : '#89b4fa'
```

What it means

• mark === 'X' ? '#f38ba8' : '#89b4fa' means: if mark is X, pink, otherwise blue.
• The old ctx.fillStyle = '#f38ba8' above the loop is deleted: every mark now picks its own color.

Your turn

1. Delete ctx.fillStyle = '#f38ba8' above board.forEach.
2. Inside the loop, under if (mark === '') return, write the new fillStyle line. Press Run.

Skills: Drawing on a canvas

← Draw what the board holds Make a move →

All steps

1. Get the canvas and the pen
2. Paint the board
3. The first grid line
4. Repeat with a loop
5. Finish the grid
6. The board as a list
7. A function that draws
8. Write an X
9. From cell number to position
10. Draw what the board holds
11. A color for each mark
12. Make a move
13. No playing on a taken cell
14. Listen for clicks
15. Which cell was clicked?
16. Clicks on any screen size
17. The eight winning lines
18. Find three in a row
19. Win, draw or go on
20. The round ends
21. Show who won
22. Light up the winning line
23. A function for a fresh round
24. Click to play again
25. A computer that picks a cell
26. The computer answers
27. Rule one: take the center
28. Rule two: win when you can
29. Rule three: block the opponent
30. Score a finished game
31. Look ahead: minimax
32. A computer that never loses
33. Build it yourself: keep score