我在井字游戏网页的JavaScript代码方面遇到了一些麻烦。每当我移动时，控制台中都会发生此错误：Uncaught TypeError: string is not a function这是我的网页链接：http : //www.cgscomputing.com/36558/test.html这是代码：
<h1>Tic Tac Toe</h1>
<table>
<tr>
<td id = "spot1"></td>
<td id = "spot2"></td>
<td id = "spot3"></td>
</tr>
<tr>
<td id = "spot4"></td>
<td id = "spot5"></td>
<td id = "spot6"></td>
</tr>
<tr>
<td id = "spot7"></td>
<td id = "spot8"></td>
<td id = "spot9"></td>
</tr>
</table>
<!---Contains the message telling which players' turn it currently is-->
<p id = "footer"></p>
<script type = "text/javascript">
//select a random number to decide which player goes first
var randNum = Math.floor((Math.random() * 2));
//list which contains what is printed to the document concerning the turn
var beginTurn = ["Computer's ", "Your "];
var turn = beginTurn[randNum];
//print who's turn it is underneath the board
var footer = document.getElementById("footer");
footer.innerHTML = turn + " turn";
//array containing all the possible combinations through which a player can win the game
var possibleCombinations = [[2, 5, 8], [3, 5, 7], [6, 5, 4], [9, 5, 1], [1, 2, 3], [7, 8, 9], [1, 4, 7], [3, 6, 9]];
//through the game, keeps track if there is a winner or not
var won = false;
//when true, the player will not be able to place another marker on the board, and will have to wait for the computer to put in a marker first
var computerTurn = false;
//function for the computer to find a spot to place its marker in the board
function findLocation() {
for (var n = 0; n < 8; n++) {
//The computer first checks if it can win by placing one more insertMarker on the board
if ((document.getElementById("spot" + possibleCombinations[n][0]).innerHTML == "O") && (document.getElementById("spot" + possibleCombinations[n][1]).innerHTML == "O") && (document.getElementById("spot" + possibleCombinations[n][2]).innerHTML == "")) {
return possibleCombinations[n][2];
break;
}
else if ((document.getElementById("spot" + possibleCombinations[n][0]).innerHTML == "O") && (document.getElementById("spot" + possibleCombinations[n][1]).innerHTML == "") && (document.getElementById("spot" + possibleCombinations[n][2]).innerHTML == "O")) {
return possibleCombinations[n][1];
break;
}
else if ((document.getElementById("spot" + possibleCombinations[n][0]).innerHTML == "") && (document.getElementById("spot" + possibleCombinations[n][1]).innerHTML == "O") && (document.getElementById("spot" + possibleCombinations[n][2]).innerHTML == "O")) {
return possibleCombinations[n][0];
break;
}
//If the computer cannot win, it checks if it can block the human player
else if ((document.getElementById("spot" + possibleCombinations[n][0]).innerHTML == "X") && (document.getElementById("spot" + possibleCombinations[n][1]).innerHTML == "X") && (document.getElementById("spot" + possibleCombinations[n][2]).innerHTML == "")) {
return possibleCombinations[n][2];
break;
}
else if ((document.getElementById("spot" + possibleCombinations[n][0]).innerHTML == "X") && (document.getElementById("spot" + possibleCombinations[n][1]).innerHTML == "") && (document.getElementById("spot" + possibleCombinations[n][2]).innerHTML == "X")) {
return possibleCombinations[n][1];
break;
}
else if ((document.getElementById("spot" + possibleCombinations[n][0]).innerHTML == "") && (document.getElementById("spot" + possibleCombinations[n][1]).innerHTML == "X") && (document.getElementById("spot" + possibleCombinations[n][2]).innerHTML == "X")) {
return possibleCombinations[n][0];
break;
}
}
//=======
//If it cannot Win or Block, the compter chooses a random spot on the board to place a insertMarker on.
//An empty array to contain all the avaliable spots on the board
avaliableSpots = [];
//The for loop adds all the avaliable spots from the board into the array
for (var i = 1; i <= 9; i++) {
var spot = "spot" + i;
if (document.getElementById(spot).innerHTML == "") {
avaliableSpots.push(i);
}
}
//A random number is generated and it is used to find a spot on the board from the avaliable spots contained in the array
var randomSpot = Math.floor((Math.random() * (avaliableSpots.length)));
return avaliableSpots[randomSpot];
}
//this function places the marker of the player and the computer on the board
function insertMarker(insertMarker, spot) {
if (won == false) {
if (document.getElementById("spot" + spot).innerHTML == "") {
if (insertMarker == "X" && computerTurn == false) {
document.getElementById("spot" + spot).innerHTML = insertMarker;
footer.innerHTML = "Computer's turn";
turn = "Computer's ";
computerTurn = true;
//Sets a delay of 1 second before the computer places its marker
setTimeout(function(){
insertMarker("O", findLocation());
}, 1000);
} else if (insertMarker == "O") {
document.getElementById("spot" + spot).innerHTML = insertMarker;
computerTurn = false;
footer.innerHTML = "Your turn";
humanturn();
}
winner();
}
}
}
//Function for the human player's turn. When the player selects a spot on the board, the insertMarker function is called, with the parameters X and the number of the spot.
function humanturn() {
//when the human player clicks on an empty spot, the insertMarker function is called with the parameters "x" and the number of the box
document.getElementById("spot1").onclick = function() {insertMarker("X", 1)};
document.getElementById("spot2").onclick = function() {insertMarker("X", 2)};
document.getElementById("spot3").onclick = function() {insertMarker("X", 3)};
document.getElementById("spot4").onclick = function() {insertMarker("X", 4)};
document.getElementById("spot5").onclick = function() {insertMarker("X", 5)};
document.getElementById("spot6").onclick = function() {insertMarker("X", 6)};
document.getElementById("spot7").onclick = function() {insertMarker("X", 7)};
document.getElementById("spot8").onclick = function() {insertMarker("X", 8)};
document.getElementById("spot9").onclick = function() {insertMarker("X", 9)};
}
//This functions checks if there is a winner
function winner() {
for (var i = 0; i < 8; i++) {
if ((document.getElementById("spot" + possibleCombinations[i][0]).innerHTML == "O") && (document.getElementById("spot" + possibleCombinations[i][1]).innerHTML == "O") && (document.getElementById("spot" + possibleCombinations[i][2]).innerHTML == "O")) {
footer.innerHTML = "COMPUTER WINS";
footer.style.color = "red";
document.getElementById("spot" + possibleCombinations[i][0]).style.backgroundColor = "yellow";
document.getElementById("spot" + possibleCombinations[i][1]).style.backgroundColor = "yellow";
document.getElementById("spot" + possibleCombinations[i][2]).style.backgroundColor = "yellow";
won = true;
break;
}
else if ((document.getElementById("spot" + possibleCombinations[i][0]).innerHTML == "X") && (document.getElementById("spot" + possibleCombinations[i][1]).innerHTML == "X") && (document.getElementById("spot" + possibleCombinations[i][2]).innerHTML == "X")) {
footer.innerHTML = "PLAYER WINS";
footer.style.color = "red";
document.getElementById("spot" + possibleCombinations[i][0]).style.backgroundColor = "yellow";
document.getElementById("spot" + possibleCombinations[i][1]).style.backgroundColor = "yellow";
document.getElementById("spot" + possibleCombinations[i][2]).style.backgroundColor = "yellow";
won = true;
break;
}
}
}
//If it is the computer's turn, the computer places a insertMarker using the insertMarker function
if (turn == "Computer's ") {
document.getElementById("footer").innerHTML = "Computer's turn";
insertMarker("O", findLocation());
turn = "Your ";
}
//If it is the human player's turn, the player places a insertMarker using the insertMarker function
else if (turn == "Your ") {
document.getElementById("footer").innerHTML = "Your turn";
humanturn();
turn = "Computer's ";
}
</script>
</body>
任何帮助都感激不尽。
您已经将该方法称为与参数相同的名称，因此，当您进行递归调用时，您正在调用的是“ O”或“ X”的参数-而不是函数。重命名其中之一，它应该可以解决此问题
编辑：应该说哪种方法。它是“ insertMarker”
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