cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

Quick-add: + add another resource

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

Quick-add: + add another resource

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

            
              <head>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<h1>Tic-Tac-Toe!</h1>
<div id = "settings">
  <div class = "setting">
    <button id = "1player" class = "btn-primary">1 Player</button>
    <button id = "2players" class = "btn-primary">2 Players</button>
  </div>
  <div class = "setting">
    <button id = "x" class = "btn-primary">X</button>
    or
    <button id = "o" class = "btn-primary">O</button>
  </div>
  <div class = "setting">
  </div>
</div>
<div id="warning"></div>
<div id = "nameContainer">
<p class = "names1">Player 1 Name: </p><input id = "name1" class = "names1"></input><p class = "names2">Player 2 Name: </p><input id = "name2" class = "names2"></input>
</div>
<div id = "newGameContainer">
<button class = "btn" id = "newGame" >New Game</button>
</div>
<div id="turnCounter"></div>
<div id = "full-container">
  <div id = "tic-tac-toe-container">
    <div id = "line1">
      <a id = "spot1" class = "spot"></a>
      <a id = "spot2" class = "spot"></a>
      <a id = "spot3" class = "spot"></a>
    </div>
    <div id = "line2">
      <a id = "spot4" class = "spot"></a>
      <a id = "spot5" class = "spot"></a>
      <a id = "spot6" class = "spot"></a>
    </div>
    <div id = "line3">
      <a id = "spot7" class = "spot"></a>
      <a id = "spot8" class = "spot"></a>
      <a id = "spot9" class = "spot"></a>
    </div>
  </div>
</div>
            
          
!
            
              h1 {
  text-align: center;
}
#settings {
  display: flex;
 justify-content: center;
  margin-left: 80px;
}
#nameContainer {
  display: flex;
  justify-content: center;
}
p {
  text-align: center;
}
.setting {
  padding: 35px;
  padding-bottom: 25px;
  padding-top: 20px;
}
#o {
  margin-left: 20px;
}
.btn-primary {
  margin-right: 15px;
  border-radius: 5px;
}
.btn-success {
  margin-right: 15px;
  border-radius: 5px;
}
#tic-tac-toe-container {
  width: 359px;
  height: 314px;
  background-color: lightgray;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
}
.spot {
	display: block;
  width: 119px;
  height: 104px;
  font-size: 75px;
  text-align: center;
  background: -moz-linear-gradient(top, #EDEDED, #DCDCDC);
    background: -webkit-gradient(linear, left top, left bottom, from(#EDEDED), to(#DCDCDC));
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#EDEDED', endColorstr='#DCDCDC');
    cursor: default;
  cursor: pointer;
  color: black;
}
#line1 {
  border-right: 1px solid black;
}
#line3 {
  border-left: 1px solid black;
}
#spot1, #spot4, #spot7 {
  border-bottom: 1px solid black;
}
#spot3, #spot6, #spot9 {
  border-top: 1px solid black;
}
#full-container {
  width: 420px;
  height: 375px;
  background-color: gray;
  margin: auto;
  padding-top: 30px;
  margin-bottom: 50px;
  border-radius: 8%;
}
#newGameContainer {
  text-align: center;
  margin-bottom: 15px;
}
a:hover {
  text-decoration: none !important;
  color: black !important;
}
.names1, .names2 {
  margin: -20px;
  visibility: hidden;
}
            
          
!
            
              //A special thanks to ahmad abdolsaheb who, through his blog, helped me figure out how to properly create the MiniMax function for the AI portion of this project: https://medium.freecodecamp.com/how-to-make-your-tic-tac-toe-game-unbeatable-by-using-the-minimax-algorithm-9d690bad4b37

$(document).ready(function(){
  
  var playerSelected = 0;
  var symbolSelected = "neither";
  var player1Symbol;
  var player2Symbol;
  var order;
  var gameStarted = false;
  var gameType;
  var turn;
  var gameBoard = [ 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8];
  var moveNumber;
  var name1 = "Player 1";
  var name2 = "Player 2";
  
  $("#newGame").click(function(){
    if(playerSelected == 0) {
      $("#warning").html("<h5 class = 'text-center alert alert-warning'>Please select a player count.</h5>");
      return;
    }
    else if (symbolSelected == "neither" && playerSelected == 1) {
      $("#warning").html("<h5 class = 'text-center alert alert-warning'>Please select a symbol for yourself.</h5>");
      return;
    }
    else if (symbolSelected == "neither" && playerSelected == 2) {
      $("#warning").html("<h5 class = 'text-center alert alert-warning'>Please select a symbol for player 1.</h5>");
      return;
    }
    else {
      gameBoard = [ 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8];
      moveNumber = 0;
      $("#warning").empty();
      $(".spot").empty();
      gameType = playerSelected;
      player1Symbol = symbolSelected;
      if (player1Symbol == "X") {
        player2Symbol = "O";
      }
      else {
        player2Symbol = "X";
      }
      gameStarted = true;
      order = Math.random() < 0.5 ? 1 : 2;
      if (order == 1) {
        if(gameType == 2) {
          $("#turnCounter").html("<h5 class = 'text-center alert alert-warning'>" + name1 + "'s turn.</h5>");
        }
        else {
          $("#turnCounter").html("<h5 class = 'text-center alert alert-warning'>Your turn.</h5>");
        }
        turn = 1;
      }
      else {
        if(gameType == 2) {
        $("#turnCounter").html("<h5 class = 'text-center alert alert-warning'>" + name2 + "'s turn.</h5>");
        turn = 2;
        }
        else {
          $("#turnCounter").html("<h5 class = 'text-center alert alert-warning'>The computer is thinking...</h5>");
          bestSpot = decision(gameBoard, player2Symbol);
          gameBoard[bestSpot.index] = player2Symbol;
          switch(bestSpot.index) {
            case 0: $("#spot1").html(player2Symbol);
              break;
            case 1: $("#spot2").html(player2Symbol);
              break;
            case 2: $("#spot3").html(player2Symbol);
              break;
            case 3: $("#spot4").html(player2Symbol);
              break;
            case 4: $("#spot5").html(player2Symbol);
              break;
            case 5: $("#spot6").html(player2Symbol);
              break;
            case 6: $("#spot7").html(player2Symbol);
              break;
            case 7: $("#spot8").html(player2Symbol);
              break;
            case 8: $("#spot9").html(player2Symbol);
              break;
            default:
              break;
                               }
          moveNumber = 1;
          $("#turnCounter").html("<h5 class = 'text-center alert alert-warning'>Your turn.</h5>");
        }
      }
    }
  });
  $("#1player").click(function(){
    $("#1player").removeClass("btn-primary").addClass("btn-success");
    $("#2players").removeClass("btn-success").addClass("btn-primary");
    $(".names1").css("visibility", "hidden");
    $(".names1").css("margin", "-20px");
    $(".names2").css("visibility", "hidden");
    $(".names2").css("margin", "-20px");
    playerSelected = 1;
    $("#warning").empty();
  });
  $("#2players").click(function(){
    $("#2players").removeClass("btn-primary").addClass("btn-success");
    $("#1player").removeClass("btn-success").addClass("btn-primary");
    if(playerSelected == 0 || playerSelected == 1) {
      $(".names1").css("visibility", "visible");
      $(".names1").css("margin", "5px 5px 20px 5px");
      $(".names2").css("visibility", "visible");
      $(".names2").css("margin", "5px 5px 20px 5px");
    }
    playerSelected = 2;
    $("#warning").empty();
  });
  $("#x").click(function(){
    $("#x").removeClass("btn-primary").addClass("btn-success");
    $("#o").removeClass("btn-success").addClass("btn-primary");
    symbolSelected = "X"
    $("#warning").empty();
  });
  $("#o").click(function(){
    $("#o").removeClass("btn-primary").addClass("btn-success");
    $("#x").removeClass("btn-success").addClass("btn-primary");
    symbolSelected = "O";
    $("#warning").empty();
  });
  
  // the main minimax function
function decision(newBoard, player){

  //available spots
  var availSpots = emptyIndexies(newBoard);

  // checks for the terminal states such as win, lose, and tie and returning a value accordingly
  if (winning(newBoard, player1Symbol)){
     return {score:-10};
  }
	else if (winning(newBoard, player2Symbol)){
    return {score:10};
	}
  else if (availSpots.length === 0){
  	return {score:0};
  }

// an array to collect all the objects
  var moves = [];

  // loop through available spots
  for (var i = 0; i < availSpots.length; i++){
    
    //create an object for each and store the index of that spot that was stored as a number in the object's index key
    var move = {};
  	move.index = newBoard[availSpots[i]];

    // set the empty spot to the current player
    newBoard[availSpots[i]] = player;

    //if collect the score resulted from calling minimax on the opponent of the current player
    if (player == player2Symbol){
      var result = decision(newBoard, player1Symbol);
      move.score = result.score;
    }
    else{
      var result = decision(newBoard, player2Symbol);
      move.score = result.score;
    }

    //reset the spot to empty
    newBoard[availSpots[i]] = move.index;

    // push the object to the array
    moves.push(move);
  }

// if it is the computer's turn loop over the moves and choose the move with the highest score
  var bestMove;
  if(player === player2Symbol){
    var bestScore = -10000;
    for(var i = 0; i < moves.length; i++){
      if(moves[i].score > bestScore){
        bestScore = moves[i].score;
        bestMove = i;
      }
    }
  }else{

// else loop over the moves and choose the move with the lowest score
    var bestScore = 10000;
    for(var i = 0; i < moves.length; i++){
      if(moves[i].score < bestScore){
        bestScore = moves[i].score;
        bestMove = i;
      }
    }
  }

// return the chosen move (object) from the array to the higher depth
  return moves[bestMove];
}

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

// winning combinations using the board indexies for instace the first win could be 3 xes in a row
function winning(board, player) {
 return (
   (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)
 );
}
  $("#spot1").click(function(){
    squareClick(1);
  });
  $("#spot2").click(function(){
    squareClick(2);
  });
  $("#spot3").click(function(){
    squareClick(3);
  });
  $("#spot4").click(function(){
    squareClick(4);
  });
   $("#spot5").click(function(){
    squareClick(5);
  });
   $("#spot6").click(function(){
    squareClick(6);
  });
  $("#spot7").click(function(){
    squareClick(7);
  });
  $("#spot8").click(function(){
    squareClick(8);
  });
  $("#spot9").click(function(){
    squareClick(9);
  });
  function squareClick(square) {
    if(gameStarted) {
      if(gameBoard[square-1] == square-1) {
        console.log(moveNumber);
        moveNumber++;
        if(gameType == 2) {
          if(turn == 1) {
            gameBoard[square-1] = player1Symbol;
            $("#spot" + square.toString()).html(player1Symbol);
            if(winning(gameBoard, player1Symbol)) {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-success'>" + name1 + " wins!</h5>");
              gameStarted = false;
            }
            else if (moveNumber >= 9) {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-info'>The game has ended in a tie... how shocking...</h5>");
              gameStarted = false;
            }
            else {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-warning'>" + name2 + "'s turn.</h5>");
              turn = 2;
            }
          }
          else {
            gameBoard[square-1] = player2Symbol;
            $("#spot" + square.toString()).html(player2Symbol);
            if(winning(gameBoard, player2Symbol)) {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-success'>" + name2 + " wins!</h5>");
              gameStarted = false;
            }
            else if (moveNumber >= 9) {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-info'>The game has ended in a tie... how shocking...</h5>");
              gameStarted = false;
            }
            else {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-warning'>" + name1 + "'s turn.</h5>");
              turn = 1;
            }
          }
        }
        else {
          gameBoard[square - 1] = player1Symbol;
          $("#spot" + square.toString()).html(player1Symbol);
          if(winning(gameBoard, player1Symbol)) {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-success'>You win!</h5>");
              gameStarted = false;
          }
          else if (moveNumber >= 9) {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-info'>The game has ended in a tie... how shocking...</h5>");
            gameStarted = false;
          }
          else {
            moveNumber++;
            bestSpot = decision(gameBoard, player2Symbol);
            gameBoard[bestSpot.index] = player2Symbol;
            switch(bestSpot.index) {
              case 0: $("#spot1").html(player2Symbol);
                break;
              case 1: $("#spot2").html(player2Symbol);
                break;
              case 2: $("#spot3").html(player2Symbol);
                break;
              case 3: $("#spot4").html(player2Symbol);
                break;
              case 4: $("#spot5").html(player2Symbol);
                break;
              case 5: $("#spot6").html(player2Symbol);
                break;
              case 6: $("#spot7").html(player2Symbol);
                break;
              case 7: $("#spot8").html(player2Symbol);
                break;
              case 8: $("#spot9").html(player2Symbol);
                break;
              default:
                break;
            }
            if(winning(gameBoard, player2Symbol)) {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-danger'>You lost... the computer has defated you...</h5>");
              gameStarted = false;
            }
            else if (moveNumber >= 9) {
              $("#turnCounter").html("<h5 class = 'text-center alert alert-info'>The game has ended in a tie... how shocking...</h5>");
              gameStarted = false;
            }
          }
        }
      }
    }
  }
  $( "#name1" )
  .keyup(function() {
    if($( this ).val() == "") {
        name1 = "Player 1"
    }
    else {
      name1 = $( this ).val();
    }
  }).keyup();
  $( "#name2" )
  .keyup(function() {
    if($( this ).val() == "") {
        name2 = "Player 2"
    }
    else {
      name2 = $( this ).val();
    }
  }).keyup();
});
            
          
!
999px
Loading ..................

Console