var board; function load() { board = [ [ [0, document.getElementById("id00")], [0, document.getElementById("id01")], [0, document.getElementById("id02")] ], [ [0, document.getElementById("id10")], [0, document.getElementById("id11")], [0, document.getElementById("id12")] ], [ [0, document.getElementById("id20")], [0, document.getElementById("id21")], [0, document.getElementById("id22")] ] ]; } var ids = { '00': [0, 0], '01': [0, 1], '02': [0, 2], '10': [1, 0], '11': [1, 1], '12': [1, 2], '20': [2, 0], '21': [2, 1], '22': [2, 2] } var ptm = 1; function move(id) { console.log(board[ids[id] [0]] [ids[id] [1]]); var charater = ""; if (ptm === 1) { charater = "X" } else (ptm === 2) { charater = "O" } board[ids[id][0]][ids[id][1]][1].innerHTML = charater; }