我正在用javascript制作一个井字游戏。我已经列出了一些我认为是基本构建模块的内容：
var board = [
0, 0, 0,
0, 0, 0,
0, 0, 0
];
gameOn = true;
player1Move = true;
counter = 0;
player1 = [];
player2 = [];
var ask = console.log(prompt('where would you like to go?'));
var drawBoard = function(){
console.log(" A " + (board[0]) + "| B " + (board[1]) + "| C " + (board[2]));
console.log(" ------------- ");
console.log(" D " + (board[3]) + "| E " + (board[4]) + "| F " + (board[5]));
console.log(" ------------- ");
console.log(" G " + (board[6]) + "| H " + (board[7]) + "| I " + (board[8]));
console.log(" ------------- ");
};
var solutions = [
(board[0] && board[1] && board[2]) || (board[3] && board[4] && board[5]) ||
(board[6] && board[7] && board[8]) || (board[0] && board[3] && board[6]) ||
(board[1] && board[4] && board[7]) || (board[2] && board[5] && board[8]) ||
(board[0] && board[4] && board[8]) || (board[2] && board[4] && board[6])
];
while (gameOn === true){
// for loop for game logic
for (var i = 0 ; i < 9; i++){
if (player1Move === true) {
player1.push(ask);
drawBoard();
player1Move = false;
} else if (player1Move === false){
player2.push(ask);
drawBoard();
player1Move = true;
} else if ((player1 || player2) === solutions){
gameOn = false;
console.log((player1 || player2) + "wins!");
} else {
gameOn = false;
console.log("Tie Game!");
}
}
}
我知道主循环的语法不正确。为什么我不能做目前写的？如果你有这个现有的代码，你会用什么类型的循环设置来完成这个？对不起，如果这看起来不够具体，我只是迷失在这一切的逻辑中！
使用这个现有的循环我想要做的就是通过并提示2个用户9次（因为最大移动= 9）现在总共。一旦有效，我将不断添加更多游戏逻辑。为什么我不能得到9次提示？目前的结果是，它提示我一次，打印出9次，然后打错。
顺便说一句，这只需要在终端窗口中工作。
答案 0 :(得分：1)
我尽可能少地更改了你的代码，但有些东西是不同的，我正在逐步解释。
var board = {
A: null,
B: null,
C: null,
D: null,
E: null,
F: null,
G: null,
H: null,
I: null
};
gameOn = true;
player1Move = true;
var drawBoard = function(){
console.log(" A " + (board.A || '') + "| B " + (board.B || '') + "| C " + (board.C || ''));
console.log(" ------------- ");
console.log(" D " + (board.D || '') + "| E " + (board.E || '') + "| F " + (board.F || ''));
console.log(" ------------- ");
console.log(" G " + (board.G || '') + "| H " + (board.H || '') + "| I " + (board.I || ''));
console.log(" ------------- ");
};
var solutions = function() {
return (board.A && (board.A == board.B && board.A == board.C))
|| (board.D && (board.D == board.E && board.D == board.F))
|| (board.G && (board.G == board.H && board.G == board.I));
};
drawBoard();
var currentPlayer;
while (gameOn === true){
// for loop for game logic
for (var i = 0 ; i < 9; i++){
if (solutions()){
console.log(currentPlayer + " wins!");
gameOn = false;
break;
}
//else {
// gameOn = false;
// console.log("Tie Game!");
//}
currentPlayer = 'Player 1';
if(!player1Move)
currentPlayer = 'Player 2';
var ask = prompt(currentPlayer + ': where would you like to go (A or B or C or ..)?');
if(ask == 'exit') {
gameOn = false;
break;
}
if (player1Move === true) {
//player1.push(ask);
board[ask] = 'X';
drawBoard();
player1Move = false;
} else if (player1Move === false){
board[ask] = 'O';
drawBoard();
player1Move = true;
}
}
}
它没有完全结束，但之后你可以做的事情，也许你不希望我为你做这一切。
这一切都适用于Chrome控制台。
有一些基本的东西阻碍了你：
var ask = console.log(prompt('where would you like to go?'));应为var ask = prompt(currentPlayer + ': where would you like to go?'); - 您的版本填充ask为空。solutions()功能需要完成，并且可能有更简洁的方法来执行此操作。答案 1 :(得分：0)
确保您了解全局对象，window.prompt是什么，以及console.log在您的上下文中是什么。 绝对必要来了解您的环境的调试器。在Chrome中，它被称为开发人员工具。
window.prompt在像jsfiddle这样的代码沙箱或者堆栈溢出的bulit-in中并不是很有用。我建议您使用HTML作为用户界面。
function init() {
trapForm();
trapInput();
toggleCurrentUser();
askUser();
}
var game = [
[null,null,null],
[null,null,null],
[null,null,null]
];
var trapInput = function() {
// capture input and use to to create a play in the game
document.querySelector('#go').addEventListener('click',function(ev) {
var position = document.querySelector('#square').valueAsNumber;
if (position < 10 && position > 0) {
// render X or O to the HTML
var td = document.querySelectorAll('#t3 td')[position-1];
td.innerHTML = currentUser;
// modify the corresponding game array
var row = Math.floor( (position-1) / 3 );
var col = ( (position+2) % 3) ;
game[row][col] = currentUser;
// this helps us visualize what's happening
debug(game);
checkGameStatus();
toggleCurrentUser();
} else {
debug({"msg":"illegal move"});
}
});
};
var trapForm = function() {
// prevent form from submitting
var f = document.querySelector('#f');
f.addEventListener('submit',function(ev) {
ev.preventDefault();
trapInput();
});
};
;(function(window,document,undefined){
"use strict";
function init() {
trapForm();
trapInput();
toggleCurrentUser();
askUser();
}
var currentUser = 'Y';
var toggleCurrentUser = function(){
if (currentUser === 'X') {
currentUser = 'Y';
} else {
currentUser = 'X';
}
document.querySelector('#currentuser').value = currentUser;
};
var isVirginal = function(game) {
return game.every(function(row) {
return row.every(function(cell) { return (cell === null); });
});
};
var isStaleMate = function(game){
return game.every(function(row){
return row.every(function(cell){
return (cell === 'X' || cell === 'Y');
});
});
};
var horizontalWinner = function(game) {
var r = false;
return game.some(function(row){
var firstletter = row[0];
if (firstletter === null) {
return false;
} else {
return row.every(function(cell){
return ( cell !== null && cell === firstletter);
});
}
});
};
var verticalWinner = function(game) {
var r = false;
for (var i = 0; i < 4; i++) {
if (game[0][i] === null) {
continue;
}
if (game[0][i] === game[1][i] && game[1][i] === game[2][i]) {
r = game[0][i];
break;
}
};
return r;
};
var diagonalWinner = function(game) {
var r = false;
if (game[0][0] !== null && (game[0][0] === game[1][1] === game[2][2])) {
r = game[0][0];
}
if (game[0][2] !== null && (game[0][2] === game[1][1] === game[2][0])) {
r = game[0][2];
}
return r;
};
var checkGameStatus = function(){
var r = 'unknown';
if (isVirginal(game)) {
r = 'Virginal Game';
} else {
r = 'In Play';
}
if (isStaleMate(game)) {
r = 'Stale Mate';
}
if (diagonalWinner(game)){
r = 'Diagonal Winner: ' + diagonalWinner(game);
}
if (verticalWinner(game)) {
r = 'vertical Winner: ' + verticalWinner(game);
}
if (horizontalWinner(game)) {
r = 'Horizontal Winner: ' + horizontalWinner(game);
}
document.querySelector('#status').value = r;
};
var debug = function(stuff) {
document.querySelector('#debug').innerHTML = JSON.stringify(stuff);
};
var game = [
[null,null,null],
[null,null,null],
[null,null,null]
];
var trapInput = function() {
// capture input and use to to create a play in the game
document.querySelector('#go').addEventListener('click',function(ev) {
var position = document.querySelector('#square').valueAsNumber;
if (position < 10 && position > 0) {
// render X or O to the HTML
var td = document.querySelectorAll('#t3 td')[position-1];
td.innerHTML = currentUser;
// modify the corresponding game array
var row = Math.floor( (position-1) / 3 );
var col = ( (position+2) % 3) ;
game[row][col] = currentUser;
// this helps us visualize what's happening
debug(game);
checkGameStatus();
toggleCurrentUser();
} else {
debug({"msg":"illegal move"});
}
});
};
var trapForm = function() {
// prevent form from submitting
var f = document.querySelector('#f');
f.addEventListener('submit',function(ev) {
ev.preventDefault();
trapInput();
});
};
document.addEventListener('DOMContentLoaded',init);
})(window,document);#t3 {
font-family: "Courier New";
font-size: xx-large;
}
#t3 td {
border: 1px solid silver;
width: 1em;
height: 1em;
vertical-align: middle;
text-align: center;
}
#f {
position: relative;
}
#f label, input, button {
float: left;
width: 200px;
}
#f label, button {
clear: left;
}
hr {
clear: both;
visibility: hidden;
}<form id="f">
<label for="currentuser">Current User</label>
<input type="text" readonly id="currentuser" name="currentuser" />
<label for="square">What Square (1-9)?</label>
<input type="number" step="1" min="1" max="9" id="square" name="square" />
<label for="status">Game Status</label>
<input type="text" readonly id="status" name="status" value="Virgin Game" />
<button type="button" id="go">make move</button>
</form>
<hr />
<table id="t3">
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
</table>
<pre id="debug"></pre>