Tic Tac Toe - Check win (Vanilla JS)

var board = [
  [0, 0, 0],
  [0, 0, 0],
  [0, 0, 0]
];

function checkWin() {
  // 检查每一行
  for (var i = 0; i < 3; i++) {
    if (board[i][0] !== 0 && board[i][0] === board[i][1] && board[i][0] === board[i][2]) {
      return board[i][0];
    }
  }

  // 检查每一列
  for (var j = 0; j < 3; j++) {
    if (board[0][j] !== 0 && board[0][j] === board[1][j] && board[0][j] === board[2][j]) {
      return board[0][j];
    }
  }

  // 检查对角线
  if (board[0][0] !== 0 && board[0][0] === board[1][1] && board[0][0] === board[2][2]) {
    return board[0][0];
  }
  if (board[0][2] !== 0 && board[0][2] === board[1][1] && board[0][2] === board[2][0]) {
    return board[0][2];
  }

  // 没有胜者
  return 0;
}

// 玩家下棋的函数
function makeMove(row, col, player) {
  if (board[row][col] === 0) {
    board[row][col] = player;
    var winner = checkWin();
    if (winner !== 0) {
      console.log("Player " + winner + " wins!");
    }
  }
}