我正在制作tic tac toe游戏，我试图修复我现在的错误。
当我玩游戏并点击O时，它会变为X，我该如何解决这个问题？
我认为它会是这样的：If (turn == 0 && ('td') == "") {
但这不起作用
var newGame = function () {
$('td').one('click', function (event) {
if (turn == 0) {
$(this).text(human);
boardCheck();
checkWin();
turn == 1;
compMove();
boardCheck();
checkWin();
}
});
};
// VARIABLES
var human = 'x'; // turn = 0
var computer = 'o'; // turn = 1
var compMove;
var turn = 0; // toggles btw 0 and 1 for switching turns
var boardCheck; // function to check value in each cell
var a1; // value within each cell
var a2;
var a3;
var b1;
var b2;
var b3;
var c1;
var c2;
var c3;
var checkWin; // function that checks the board for winning combo
var xWin = false; // true if X wins
var oWin = false; // true if O wins
var winAlert; // function that declares winner and restarts game
var newGame;
var clearBoard;
// PLACES AN X OR O IN THE BOX WHEN CLICKED. TOGGLES.
var newGame = function () {
$('td').one('click', function (event) {
if (turn == 0) {
$(this).text(human);
boardCheck();
checkWin();
turn == 1;
compMove();
boardCheck();
checkWin();
}
});
};
// INITIALIZES GAME - keep after var newGame
$(document).ready(function () {
newGame();
});
// COMP MOVE AI DETECTS IF THERE ARE TWO IN A ROW NEXT TO AN EMPTY CELL AND PLACES MOVE THERE
var compMove = function () {
if (a1 == "" && ((a3 == "x" && a2 == "x") || (c3 == "x" && b2 == "x") || (c1 == "x" && b1 == "x"))) {
$('#a1').text("o");
turn = 0;
} else {
if (a2 == "" && ((a1 == "x" && a3 == "x") || (c2 == "x" && b2 == "x"))) {
$('#a2').text("o");
turn = 0;
}
else{
if (a3 == "" && ((a1 == "x" && a2 == "x") || (c1 == "x" && b2 == "x") || (c3 == "x" && b3 == "x"))) {
$('#a3').text("o");
turn = 0;
}
else{
if (c3 == "" && ((c1 == "x" && c2 == "x") || (a1 == "x" && b2 == "x") || (a3 == "x" && b3 == "x"))) {
$('#c3').text("o");
turn = 0;
}
else{
if (c1 == "" && ((c3 == "x" && c2 == "x") || (a3 == "x" && b2 == "x") || (a1 == "x" && b1 == "x"))) {
$('#c1').text("o");
turn = 0;
}
else{
if (c2 == "" && ((c3 == "x" && c1 == "x") || (a2 == "x" && b2 == "x"))) {
$('#c2').text("o");
turn = 0;
}
else{
if (b1 == "" && ((b3 == "x" && b2 == "x") || (a1 == "x" && c1 == "x"))) {
$('#b1').text("o");
turn = 0;
}
else{
if (b3 == "" && ((a3 == "x" && c3 == "x") || (b2 == "x" && b1 == "x"))) {
$('#b3').text("o");
turn = 0;
}
else{
if (b2 == "" && ((a3 == "x" && c1 == "x") || (c3 == "x" && a1 == "x") || (b3 == "x" && b1 == "x") || (c2 == "x" && a2 == "x"))) {
$('#b2').text("o");
turn = 0;
}
else{ // IF NO OPP TO BLOCK A WIN, THEN PLAY IN ONE OF THESE SQUARES
if (b2 == "") {
$('#b2').text("o");
turn = 0;
}
else{
if (a1 == "") {
$('#a1').text("o");
turn = 0;
}
else{
if (c3 == "") {
$('#c3').text("o");
turn = 0;
}
else {
if (c2 == "") {
$('#c2').text("o");
turn = 0;
}
else{
if (b1 == "") {
$('#b1').text("o");
turn = 0;
}
}
}
}
}
}
}
}
}
}
}
}
}
}
};
// CREATES A FUNCTION TO DETECT WHAT IS IN EACH BOX AFTER EACH MOVE
boardCheck = function () {
a1 = $('#a1').html();
a2 = $('#a2').html();
a3 = $('#a3').html();
b1 = $('#b1').html();
b2 = $('#b2').html();
b3 = $('#b3').html();
c1 = $('#c1').html();
c2 = $('#c2').html();
c3 = $('#c3').html();
};
// CREATES A FUNCTION TO DETECT A WIN OR A TIE
checkWin = function () { // CHECKS IF X WON
if ((a1 == a2 && a1 == a3 && (a1 == "x")) || //first row
(b1 == b2 && b1 == b3 && (b1 == "x")) || //second row
(c1 == c2 && c1 == c3 && (c1 == "x")) || //third row
(a1 == b1 && a1 == c1 && (a1 == "x")) || //first column
(a2 == b2 && a2 == c2 && (a2 == "x")) || //second column
(a3 == b3 && a3 == c3 && (a3 == "x")) || //third column
(a1 == b2 && a1 == c3 && (a1 == "x")) || //diagonal 1
(a3 == b2 && a3 == c1 && (a3 == "x")) //diagonal 2
) {
xWin = true;
winAlert();
} else { // CHECKS IF O WON
if ((a1 == a2 && a1 == a3 && (a1 == "o")) || //first row
(b1 == b2 && b1 == b3 && (b1 == "o")) || //second row
(c1 == c2 && c1 == c3 && (c1 == "o")) || //third row
(a1 == b1 && a1 == c1 && (a1 == "o")) || //first column
(a2 == b2 && a2 == c2 && (a2 == "o")) || //second column
(a3 == b3 && a3 == c3 && (a3 == "o")) || //third column
(a1 == b2 && a1 == c3 && (a1 == "o")) || //diagonal 1
(a3 == b2 && a3 == c1 && (a3 == "o")) //diagonal 2
) {
oWin = true;
winAlert();
} else { // CHECKS FOR TIE GAME IF ALL CELLS ARE FILLED
if (((a1 == "x") || (a1 == "o")) && ((b1 == "x") || (b1 == "o")) && ((c1 == "x") || (c1 == "o")) && ((a2 == "x") || (a2 == "o")) && ((b2 == "x") || (b2 == "o")) && ((c2 == "x") || (c2 == "o")) && ((a3 == "x") || (a3 == "o")) && ((b3 == "x") || (b3 == "o")) && ((c3 == "x") || (c3 == "o"))) {
alert("It's a tie!");
clearBoard();
}
}
}
};
// DECLARES WHO WON
var winAlert = function () {
if (xWin == true) {
alert("You won!");
clearBoard(); // THIS DOESN'T WORK
} else {
if (oWin == true) {
alert("Sorry, you lose!");
clearBoard(); // THIS DOESN'T WORK
}
}
};
// NEWGAME BUTTON CLEARS THE BOARD, RESTARTS GAME, AND RESETS THE WINS
var clearBoard = $('#restart').click(function (event) {
a1 = $('#a1').text("");
b1 = $('#b1').text("");
c1 = $('#c1').text("");
a2 = $('#a2').text("");
b2 = $('#b2').text("");
c2 = $('#c2').text("");
a3 = $('#a3').text("");
b3 = $('#b3').text("");
c3 = $('#c3').text("");
xWin = false;
oWin = false;
newGame();
window.location.reload(true); // WITHOUT THIS, THERE'S A BUG WHICH PLACES MULTIPLE 0'S ON ALL GAMES AFTER THE FIRST
});
// STILL NEED TO FIX:
// * Alert for tie game or xWin appears twice
// * X's can replace O's
// * Missed opportunities for O to win
// * Almost never let's human win
// * Clean up logic for compMove'
答案 0 :(得分：2)
if (turn == 0 && $(this).text() == "") {