Workshop › Minesweeper › Step 2 of 26

The canvas and the pen

What we are doing

The page has a 360×400 canvas with the id game. We find it and take its 2D drawing tools.

```js
const canvas = document.getElementById('game')
const ctx = canvas.getContext('2d')
```

What it means

• document.getElementById('game') finds the canvas; getContext('2d') gives its drawing tools, ctx.

Your turn

Write the two lines under the comment lines, above const SIZE = 9, with an empty line after them.

Skills: Drawing on a canvas

← A grid of cell objects Draw the field →

All steps

1. A grid of cell objects
2. The canvas and the pen
3. Draw the field
4. Draw every frame
5. Neighbours
6. Mines, but not under the first click
7. Shuffle the candidates
8. Count the mines around
9. Open a cell
10. Open cells look different
11. Coloured numbers
12. Click to open
13. Stepping on a mine
14. Show the mines
15. Flood fill
16. Flags with the right button
17. A flag protects its cell
18. Draw the flags
19. Mines left
20. Winning
21. The end and a new game
22. What time is it?
23. The clock
24. Stop the clock
25. The best time
26. Build it yourself: wrong flags