Workshop › 2048 › Step 7 of 26

Find the empty cells

What we are doing

New tiles appear in random empty cells. First we collect all of them as [row, col] pairs.

```js
function emptyCells() {
  const cells = []
  for (let row = 0; row < SIZE; row++) {
    for (let col = 0; col < SIZE; col++) {
      if (board[row][col] === 0) cells.push([row, col])
    }
  }
  return cells
}
```

What it means

The loops visit all 16 cells; each empty one is pushed as a small array [row, col].
The result is a list of pairs, like [[1, 1], [3, 3]].

Your turn

Write emptyCells above function newGame() {, with an empty line after it.

Skills: Arrays and objects, Loops

← Big numbers, smaller text A new tile →

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