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HTML

              
                <div class="container text-center">
  <h1>Tic Tac Toe</h1>
  
  
  <div id="board" class="rounded">
    <div id="humanTurn" class="turnMsg">Your Turn</div>
    <div id="computerTurn" class="turnMsg">Computer's Turn</div>
    <div id="startMessage">
      <p>Would you like to be X or O?</p>
      <button id="chooseX">X</button>
      <button id="chooseO">O</button>
  </div>
    <div id="message">You Win!</div>
    <div id="grid">
      <div id="box1"></div>
      <div id="box2"></div>
      <div id="box3"></div>
      <div id="box4"></div>
      <div id="box5"></div>
      <div id="box6"></div>
      <div id="box7"></div>
      <div id="box8"></div>
      <div id="box9"></div>
  </div>
</div>
  <footer class="text-center">
    Made with <span class="glyphicon glyphicon-heart"></span><br/>
    by <a href='/kode29' target='_blank'>Kyle M. Perkins</a>
  </footer>
              
            
!

CSS

              
                body{
  background-color: #1e1f21;
  color: #cac9cd;
}
#board{
  font-family: 'Indie Flower', Arial, cursive;
  box-shadow: 0 0 10px rgba(255,255,255,.8);
  height: 545px;
  width: 545px;
  margin: auto;
  border: 10px #fff solid;
  border-radius: 5px;
  background-color: #999;
    box-sizing: border-box;
  color: #000;

}
#grid>div{
  border: 1px #000 solid;
  height: 175px;
  width: 175px;
  float: left;
  cursor: default;
}
#grid>div>div{
  font-size: 14em;
  line-height: 175px;
}
#grid{
  position: relative;
  z-index: 0;
}
#message{
  width: 100%;
    height: 100%;
    background: rgba(255,240,0,.8);
    margin-bottom: -100%;
    padding-top: 30%;
    font-size: 10em;
    z-index: 100;
    position: relative;
  display: none;
}
#startMessage{
    width: 100%;
    height: 100%;
    background: rgba(120,120,120,.8);
    margin-bottom: -100%;
    padding-top: 10%;
    font-size: 6em;
    z-index: 100;
    position: relative;
}
#startMessage button{
  background-color: rgba(255,255,255,.5);
  width: 130px;
  height: 130px;
  border-radius: 25%;
  border: 0;
  transition: all .5s ease-in-out;
}
#startMessage button:hover{
  background-color: rgba(255,255,255,.85);
}
.turnMsg{
  width: 30%;
    line-height: 2em;
    position: relative;
    z-index: -100;
    margin-bottom: -2em;
    height: 2em;
  border-radius: 5px;
}
#humanTurn{
  background-color: #fc0;
}
#computerTurn{
  background-color: #b00;
  float: right;
}
footer{
  margin: 2em auto;
  line-height: 1.5em;
  font-size: .8em;
}
              
            
!

JS

              
                $(function() {
    // First, determine who's turn it is
    var currentTurn = "human"; // manual override for now
    var humanSymbol, computerSymbol;
    var gameStatus = "play";
    var winningBoxes = [
        [1, 2, 3],
        [4, 5, 6],
        [7, 8, 9],
        [1, 4, 7],
        [2, 5, 8],
        [3, 6, 9],
        [1, 5, 9],
        [3, 5, 7]
    ];
  
  function resetTurnBoxes(){
    $('#humanTurn').animate({"top": "0px"});
    $('#computerTurn').animate({"top": "0px"});
  }

    function playGame() {
        console.log("Current Turn: " + currentTurn);
      resetTurnBoxes();
        if (currentTurn == "computer") {
            $('#computerTurn').animate({"top": "-50px"});

            var emptyBoxes = [];

            $("#grid div").each(function(e) {
                if ($(this).html().length == 0) {
                    emptyBoxes.push($(this).attr("id"));
                }
            });
           //console.log(emptyBoxes);

          var randomBox =
              emptyBoxes[Math.floor(Math.random() * emptyBoxes.length)];
          console.log("Thinking...");
          //console.log(randomBox);
          setTimeout(function() {
            $("#" + randomBox).click();
          }, 1000);
        } else{
          $('#humanTurn').animate({"top": "-50px"});
          console.log("Your turn!");
        }
    }
  
      $('#startMessage button').on('click', function(){
        var selectedSymbol = $(this).attr("id").substr(-1);
        if (selectedSymbol == "X"){
          humanSymbol = "X";
          computerSymbol = "O";
        } else {
          humanSymbol = "O";
          computerSymbol = "X";
        }
      
      $('#startMessage').fadeOut(function(){
        $(this).remove();
      });
      playGame();
    });

    function resetGame() {
        console.log("Resetting Game...");
        resetTurnBoxes();
        $("#grid div div").each(function(e) {
            $(this).fadeOut(function() {
                $(this).remove();
            });
        });
        gameStatus = "play";
        playGame();
    }

    function searchForArray(haystack, needle) {
        var b, i, j, current, boxCounter;
        for (i = 0; i < haystack.length; ++i) {
            //console.log(haystack[i]);
            current = haystack[i];
            boxCounter = 0;

            for (j = 0; j < needle.length; j++) {
                //console.log(needle);
                for (b = 0; b < current.length; b++) {
                    //console.log("Checking " + current[b] + "==" + needle[j]);
                    if (current[b] == needle[j]) {
                        boxCounter++;
                    }
                    //console.log(boxCounter);
                    if (boxCounter == 3) {
                        console.warn("We've reached our limit of the game. The result is...");
                        return true;
                    }
                }
            }
        }
        return false;
    }

    function changeTurn() {
        currentTurn = currentTurn == "human" ? "computer" : "human";
    }

    function checkIfWin() {
        var filledBoxesX = [];
        var filledBoxesO = [];

        $("#grid div div").each(function(e) {
            if ($(this).text() != "") {
                var boxSymbol = $(this).text();
                var boxId = $(this)
                    .parent()
                    .attr("id");

                switch (boxSymbol) {
                    case "X":
                        filledBoxesX.push(boxId.substr(-1) * 1);
                        break;
                    case "O":
                        filledBoxesO.push(boxId.substr(-1) * 1);
                        break;
                }
            }
        });

        // Display end message, and restart

        if (filledBoxesX.length >= 3 && searchForArray(winningBoxes, filledBoxesX))
            win("X");
        else if (
            filledBoxesO.length >= 3 &&
            searchForArray(winningBoxes, filledBoxesO)
        )
            win("O");
        else if (filledBoxesX.length + filledBoxesO.length == 9) win("Draw");
        else changeTurn();
    }

    function win(symbol) {
        gameStatus = "stop";
        resetTurnBoxes();
        var msg, msgColor;
        switch (symbol) {
            case humanSymbol:
                msg = "You Win!";
                msgColor = "rgba(255,240,0,.8)";
            console.log("%c"+msg, "background-color: #fc0;");
                break;
            case computerSymbol:
                msg = "You lost";
            console.log("%c"+msg, "background-color: #c00; color: #fff;");
                msgColor = "rgba(240,0,0,.8)";
                break;
            case "Draw":
                msg = "Draw!";
            console.log("%cIt's a draw!", "background-color: rgb(34,139,34); color: #fff;");
                msgColor = "rgba(34,139,34, .8)";
                break;
        }
        $("#message").css("background-color", msgColor);
        $("#message")
            .html(msg)
            .fadeIn()
            .delay(2000)
            .fadeOut();
        setTimeout(resetGame, 2000);
    }

    // Next, insert the "symbol" of whose turn it is
    // inside the square that is clicked
    $("#grid div").on("click", function() {
        //console.log($(this).attr('id'));
        symbol = currentTurn == "human" ? humanSymbol : computerSymbol;
        console.log("Inserting " + symbol);

        if ($(this).html().length == 0 && gameStatus == "play") {
            // Don't insert a symbol on a box that is already occupied
            $(this).html("<div>" + symbol + "</div>");

            // On click, and after placement, check for a "winning strategy"
            checkIfWin();
            playGame();
        } else
          console.warn("I can't do that. The box already has a symbol in it! Choose another box");
    });

});
              
            
!
999px

Console