minimax1.js

/* the original board
 O |   | X
 ---------
 X |   | X
 ---------
   | O | O
 */
var origBoard = [“O”,1 ,”X”,”X”,4 ,”X”, 6 ,”O”,”O”];

// human
var huPlayer = “O”;

// ai
var aiPlayer = “X”;

// returns list of the indexes of empty spots on the board
function emptyIndexies(board){
  return  board.filter(s => s != "O" && s != "X");
}

// winning combinations using the board indexies
function winning(board, player){
 if (
 (board[0] == player && board[1] == player && board[2] == player) ||
 (board[3] == player && board[4] == player && board[5] == player) ||
 (board[6] == player && board[7] == player && board[8] == player) ||
 (board[0] == player && board[3] == player && board[6] == player) ||
 (board[1] == player && board[4] == player && board[7] == player) ||
 (board[2] == player && board[5] == player && board[8] == player) ||
 (board[0] == player && board[4] == player && board[8] == player) ||
 (board[2] == player && board[4] == player && board[6] == player)
 ) {
 return true;
 } else {
 return false;
 }
}