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tictactoe_rc.html
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tictactoe_rc.html
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<!DOCTYPE html>
<html>
<head>
<title>Tic Tac Toe</title>
<style>
.cells {
text-align: center;
width: 50px;
height: 50px;
}
</style>
<script>
var playerOne = "X";
var computerTurn = "O";
var cells = document.getElementsByClassName('cells');
console.log(cells);
function startGame(){
for(var i = 1; i <=9; i++) {
clearGame(i);
}
document.turn = playerOne;
document.winner = null;
displayOutcome(document.turn + " is up first!");
}
function clearGame(number) {
document.getElementById(number).innerHTML = "";
}
function displayOutcome(msg) {
document.getElementById("outcome").innerHTML = msg;
}
function nextMove(cell) {
if (document.winner != null) {
displayOutcome(document.winner + " already won the game.");
} else if(cell.innerHTML === ""){
cell.innerHTML = document.turn;
switchPlayer();
//playNextAvailCell();
playRandomCell();
switchPlayer();
console.log(board());
} else {
displayOutcome("That square is already used.");
}
}
function switchPlayer() {
if(checkForWinner(document.turn)) {
displayOutcome("Congrats, " + document.turn + ". You Win!")
document.winner = document.turn;
} else if(checkForDraw(document.turn)) {
displayOutcome("It's a draw.")
} else if(document.turn === playerOne){
document.turn = computerTurn;
//displayOutcome("It's " + document.turn + " turn.")
} else {
document.turn = playerOne;
}
}
function board() {
//returns representation of empty and full cells on board
document.cellArr = [];
for(var i = 1; i <= 9; i++) {
document.cellArr.push(getBox(i));
}
return document.cellArr;
}
function playNextAvailCell() {
for(var i = 0; i < 9; i++) {
if(cells[i].innerHTML !== ""){
cells[i] = cells.innerHTML
continue;
}
else {
cells[i].innerHTML = computerTurn;
cells[i] = cells.innerHTML
break;
}
}
}
var emptyStrArr = [0, 1, 2, 3, 4, 5, 6, 7, 8];
function playRandomCell() {
for(i = 0; i <= 9; i++) {
var randNum = Math.floor(Math.random() * (emptyStrArr.length));
if(cells[randNum].innerHTML !== "") {
continue;
}
else {
cells[randNum].innerHTML = computerTurn;
break;
}
}
}
function pickRandCell() {
//stores integer in index randNum
var randNum = Math.floor(Math.random() * (emptyStrArr.length));
//stores random cell using emptyStrArr
var toPlay = emptyStrArr[randNum];
//deletes that integer from emptyStrArr
emptyStrArr.splice(randNum, 1);
//returns cell to be played by computer player
return toPlay;
}
function checkForWinner(move) {
var result = false;
if (checkRow(1, 2, 3, move) ||
checkRow(4, 5, 6, move) ||
checkRow(7, 8, 9, move) ||
checkRow(1, 4, 7, move) ||
checkRow(2, 5, 8, move) ||
checkRow(3, 6, 9, move) ||
checkRow(1, 5, 9, move) ||
checkRow(3, 5, 7, move)) {
result = true;
}
return result;
}
function checkRow(a, b, c, move) {
var result = false;
if(getBox(a) === move && getBox(b) === move && getBox(c) === move){
result = true;
}
return result;
}
function getBox(number) {
var cellId = document.getElementById(number).innerHTML;
return cellId;
}
function checkForDraw() {
var result = false;
if(isBoardFull() === true && checkForWinner() === false) {
result = true;
}
return result;
}
function isBoardFull(cells) {
var cells = document.querySelectorAll('.cells');
for(var i = 0; i < cells.length; i++) {
if (cells[i].innerHTML.length === 0) {
return false;
}
}
return true;
}
</script>
</head>
<body onload="startGame();">
<h1>Tic Tic Toe</h1>
<div id="outcome"></div>
<table border="1">
<tr>
<td id="1" class="cells" onclick="nextMove(this);"></td>
<td id="2" class="cells" onclick="nextMove(this);"></td>
<td id="3" class="cells" onclick="nextMove(this);"></td>
</tr>
<tr>
<td id="4" class="cells" onclick="nextMove(this);"></td>
<td id="5" class="cells" onclick="nextMove(this);"></td>
<td id="6" class="cells" onclick="nextMove(this);"></td>
</tr>
<tr>
<td id="7" class="cells" onclick="nextMove(this);"></td>
<td id="8" class="cells" onclick="nextMove(this);"></td>
<td id="9" class="cells" onclick="nextMove(this);"></td>
</tr>
</table>
<a href="javascript:startGame();">New Game</a>
</body>
</html>