HTML JavaScript 康威生命游戏

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<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>康威生命游戏</title><style>body {font-family: Arial, sans-serif;text-align: center;}#game-board {display: inline-block;border: 1px solid black;}.cell {width: 15px;height: 15px;float: left;border:1px solid black;background-color: white;}.cell.alive {background-color: black;}button {margin-top: 10px;}</style>
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<body><h1 style="font-size: 14px;">康威生命游戏 先点击设定初始图形，再点击开始</h1><div id="game-board"></div><button onclick="startGame()" style="width: 50px;">开始</button><button onclick="clearBoard()" style="width: 50px;">清除</button><script>const ROWS = 30;const COLS = 60;let board = [];let nextBoard = [];let gameInterval = null; // 添加一个全局变量来存储定时器的引用  function initializeBoard() {board = [];nextBoard = [];for (let i = 0; i < ROWS; i++) {board[i] = [];nextBoard[i] = [];for (let j = 0; j < COLS; j++) {board[i][j] = false;nextBoard[i][j] = false;}}}function drawBoard() {const gameBoard = document.getElementById('game-board');gameBoard.innerHTML = '';for (let i = 0; i < ROWS; i++) {for (let j = 0; j < COLS; j++) {const cell = document.createElement('div');cell.className = 'cell';if (board[i][j]) {cell.classList.add('alive');}cell.addEventListener('click', () => {board[i][j] = !board[i][j];drawBoard();});gameBoard.appendChild(cell);}const br = document.createElement('br');gameBoard.appendChild(br);}}function countNeighbors(row, col) {let count = 0;for (let i = -1; i <= 1; i++) {for (let j = -1; j <= 1; j++) {if (i === 0 && j === 0) {continue;}const neighborRow = row + i;const neighborCol = col + j;if (neighborRow >= 0 &&neighborRow < ROWS &&neighborCol >= 0 &&neighborCol < COLS &&board[neighborRow][neighborCol]) {count++;}}}return count;}function updateBoard() {for (let i = 0; i < ROWS; i++) {for (let j = 0; j < COLS; j++) {const neighbors = countNeighbors(i, j);if (board[i][j]) {if (neighbors < 2 || neighbors > 3) {nextBoard[i][j] = false;} else {nextBoard[i][j] = true;}} else {if (neighbors === 3) {nextBoard[i][j] = true;}}}}for (let i = 0; i < ROWS; i++) {for (let j = 0; j < COLS; j++) {board[i][j] = nextBoard[i][j];}}}function startGame() {// 在启动新定时器之前，检查并清除可能存在的旧定时器  if (gameInterval !== null) {  clearInterval(gameInterval);  gameInterval = null;  }  // 启动新的定时器并保存在全局变量中  gameInterval = setInterval(() => {  updateBoard();  drawBoard();  }, 300);  }function clearBoard() {// 清除定时器  if (gameInterval !== null) {  clearInterval(gameInterval);  gameInterval = null;  }  initializeBoard();drawBoard();}initializeBoard();drawBoard();</script>
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