一、功能介绍
井字游戏是一款经典的策略性棋盘游戏，也被称为井字棋或三子棋。游戏通过在3×3的棋盘上轮流落子，目标是将自己的棋子以横、竖或对角线的形式连成一条线，先达成连线的一方获胜。这款游戏简单易学，但需要一定的思考和策略，是一款适合所有年龄段的休闲游戏。
游戏开始时，棋盘上显示一个3×3的网格，玩家扮演的是”X”棋子，计算机扮演的是”O”棋子。玩家和计算机轮流落子，每个回合可以在空白的格子中放置自己的棋子。玩家通过点击空白格子来放置”X”棋子，计算机会自动进行下棋。当任意一方的棋子以横、竖或对角线的形式连成一条线时，该方获得胜利。如果棋盘填满且没有任何一方获胜，则游戏为平局。挑战计算机，思考最佳策略，争取在井字游戏中获得胜利吧！
二、页面搭建
1）创建文件
首先创建一个HTML文件，命名随意 xxx.html
2）DOM结构搭建
首先列出9个盒子
3）添加样式
.board {
display: grid;
grid-template-columns: repeat(3, 1fr);
grid-template-rows: repeat(3, 1fr);
gap: 5px;
width: 300px;
height: 300px;
margin: 0 auto;
border: 1px solid #ccc;
padding: 5px;
}
.cell {
display: flex;
align-items: center;
justify-content: center;
font-size: 24px;
font-weight: bold;
background-color: #f2f2f2;
cursor: pointer;
}
#result {
text-align: center;
font-size: 24px;
margin-top: 20px;
}
4）逻辑部分
通过监听格子的点击事件，调用 updateGameState 函数处理玩家的移动，并在页面加载完成后调用 resetGame 函数初始化游戏。
function updateGameState(cellIndex) {
if (!gameEnded && board[cellIndex] === "") {
board[cellIndex] = currentPlayer;
renderBoard();
if (checkWin(currentPlayer)) {
endGame("Player " + currentPlayer + " wins!");
} else if (checkDraw()) {
endGame("It's a draw!");
} else {
currentPlayer = currentPlayer === "X" ? "O" : "X";
if (currentPlayer === "O") {
setTimeout(makeComputerMove, 500);
}
}
}
}
function checkWin(player) {
const winningCombinations = [
[0, 1, 2],
[3, 4, 5],
[6, 7, 8],
[0, 3, 6],
[1, 4, 7],
[2, 5, 8],
[0, 4, 8],
[2, 4, 6]
];
for (let i = 0; i cell !== "");
}
function endGame(message) {
gameEnded = true;
resultElement.textContent = message;
}
function makeComputerMove() {
const emptyCells = board.reduce((acc, cell, index) => {
if (cell === "") {
acc.push(index);
}
return acc
}
, []);
if (emptyCells.length > 0) {
const randomIndex = Math.floor(Math.random() * emptyCells.length);
const computerMove = emptyCells[randomIndex];
updateGameState(computerMove);
}
}
function renderBoard() {
for (let i = 0; i {
cell.addEventListener("click", () => updateGameState(index));
});
resetGame();
三、完整代码
Document
.board {
display: grid;
grid-template-columns: repeat(3, 1fr);
grid-template-rows: repeat(3, 1fr);
gap: 5px;
width: 300px;
height: 300px;
margin: 0 auto;
border: 1px solid #ccc;
padding: 5px;
}
.cell {
display: flex;
align-items: center;
justify-content: center;
font-size: 24px;
font-weight: bold;
background-color: #f2f2f2;
cursor: pointer;
}
#result {
text-align: center;
font-size: 24px;
margin-top: 20px;
}
const board = ["", "", "", "", "", "", "", "", ""];
const cells = document.querySelectorAll(".cell");
const resultElement = document.getElementById("result");
let currentPlayer = "X";
let gameEnded = false;
function updateGameState(cellIndex) {
if (!gameEnded && board[cellIndex] === "") {
board[cellIndex] = currentPlayer;
renderBoard();
if (checkWin(currentPlayer)) {
endGame("Player " + currentPlayer + " wins!");
} else if (checkDraw()) {
endGame("It's a draw!");
} else {
currentPlayer = currentPlayer === "X" ? "O" : "X";
if (currentPlayer === "O") {
setTimeout(makeComputerMove, 500);
}
}
}
}
function checkWin(player) {
const winningCombinations = [
[0, 1, 2],
[3, 4, 5],
[6, 7, 8],
[0, 3, 6],
[1, 4, 7],
[2, 5, 8],
[0, 4, 8],
[2, 4, 6]
];
for (let i = 0; i cell !== "");
}
function endGame(message) {
gameEnded = true;
resultElement.textContent = message;
}
function makeComputerMove() {
const emptyCells = board.reduce((acc, cell, index) => {
if (cell === "") {
acc.push(index);
}
return acc
}
, []);
if (emptyCells.length > 0) {
const randomIndex = Math.floor(Math.random() * emptyCells.length);
const computerMove = emptyCells[randomIndex];
updateGameState(computerMove);
}
}
function renderBoard() {
for (let i = 0; i {
cell.addEventListener("click", () => updateGameState(index));
});
resetGame();
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