废话不多说了，直接给大家贴代码了，觉得很满意直接拿去。
<!DOCTYPE html PUBLIC "-//WC//DTD XHTML . Transitional//EN" "http://www.w.org/TR/xhtml/DTD/xhtml-transitional.dtd"><html xmlns="http://www.w.org//xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-" /><title>无标题文档</title><style>header{display:block; margin: auto; width:%; text-align:center;}header h{font-size:px; font-family:Arial, Helvetica, sans-serif; font-weight:bold;}header #newgamebutton{display:block; margin:px auto; width:px; padding:px px; background-color:#fa; font-family:Arial; color:white; border-radius:px; text-decoration:none;}header #newgamebutton:hover{background-color:#fb;}header p{font-family:Arial; font-size:px; margin:px auto;}#grid-container{width:px; height:px; padding:px; margin:px auto; background-color:#bbada; border-radius:px; position:relative;}.grid-cell{width:px; height:px; border-radius:px; color:white; background-color:#cccb; position:absolute; font-family:Arial; font-weight:bold; font-size:px; line-height:px; text-align:center;}.gameover{display:block; margin: auto; width:px; text-align:center; vertical-align:middle; position:absolute;}.gameover p {font-family: Arial;font-size: px;color: white;margin: px auto;margin-top: px;}.gameover span {font-family: Arial;font-size: px;color: white;margin: px auto;}#restartgamebutton {display: block;margin: px auto;width: px;padding: px px;background-color: #fa;font-family: Arial;font-size: px;color: white;border-radius: px;text-decoration: none;}#restartgamebutton:hover {background-color: #fb;}#showGameover{width:px; padding:px px; background-color:#fa; font-family:Arial; color:white; border-radius:px; text-decoration:none; font-size:px; position:absolute;}</style><script>window.onload = function (){//newgame();var showScore = document.getElementById('score');score = ;init();generateOneNumber();generateOneNumber();window.onkeydown = function (e){var e = e || window.event;switch(e.keyCode){case :if(canMoveLeft(board)){moveLeft();generateOneNumber();isgameover();}break;case :if(canMoveUp(board)){moveUp();generateOneNumber();isgameover();}break;case :if(canMoveRight(board)){moveRight();generateOneNumber();isgameover();}break;case :if(canMoveDown(board)){moveDown();generateOneNumber();isgameover();}break;default :break;}};};function generateOneNumber() {if(!nospace(board)){var randx = parseInt(Math.floor(Math.random() * ));var randy = parseInt(Math.floor(Math.random() * ));while (true) {if (board[randx][randy] == ) {break;}var randx = parseInt(Math.floor(Math.random() * ));var randy = parseInt(Math.floor(Math.random() * ));}var randNumber = Math.random() < . ? : ;board[randx][randy] = randNumber;var gridCell = document.getElementById('grid-cell-'+randx+'-'+randy);gridCell.innerHTML = randNumber;//}else {gameover();}}function newgame() {window.location.reload();}var board = new Array();function init(){for(var i=;i<;i++){board[i] = new Array();for(var j=;j<;j++){board[i][j] = ;var gridCell = document.getElementById('grid-cell-'+i+'-'+j);gridCell.style.top = (+i*)+'px';gridCell.style.left = (+j*)+'px';}}}function getNumberBackgroundColor(number) {switch (number) {case :return "#eeeda";break;case :return "#edec";break;case :return "#fb";break;case :return "#f";break;case :return "#fcf";break;case :return "#feb";break;case :return "#edcf";break;case :return "#edcc";break;case :return "#c";break;case :return "#be";break;case :return "#c";break;case :return "#ac";break;case :return "#c";break;}}function getNumberColor(number) {if (number <= ) {return "#e"}return "white";}function nospace(board) {for (var i = ; i < ; i++) {for (var j = ; j < ; j++) {if (board[i][j] == ) {return false;}}}return true;}function canMoveLeft(board) {for (var i = ; i < ; i++) {for (var j = ; j < ; j++) {if (board[i][j] != ) {if (board[i][j - ] == || board[i][j - ] == board[i][j]) {return true; }}}}return false;}function moveLeft() {for (var i = ; i < ; i++) {for (var j = ; j < ; j++) {if (board[i][j] != ) {for (var k = j-; k > -; k--) {if(board[i][k] == || board[i][k] == board[i][j]){board[i][k] = board[i][k] + board[i][j];board[i][j] = ;var gridCell = document.getElementById('grid-cell-'+i+'-'+j);gridCell.innerHTML = '';var gridCellk = document.getElementById('grid-cell-'+i+'-'+k);gridCellk.innerHTML = board[i][k];gridCellk.style.backgroundColor = getNumberBackgroundColor(board[i][k]);gridCell.style.backgroundColor = '#cccb';gridCellk.style.color = getNumberColor(board[i][k]);gridCell.style.color = 'white';score += board[i][k];var showScore = document.getElementById('score');showScore.innerHTML = score;j = k;//}else {break; //跳出 var k 的for循环}}}}}}function canMoveUp(board) {for (var j = ; j < ; j++) {for (var i = ; i < ; i++) {if (board[i][j] != ) {if (board[i - ][j] == || board[i - ][j] == board[i][j]) {return true; }}}}return false;}function moveUp() {for (var j = ; j < ; j++) {for (var i = ; i < ; i++) {if (board[i][j] != ) {for (var k = i-; k > -; k--) {if(board[k][j] == || board[k][j] == board[i][j]){board[k][j] = board[k][j] + board[i][j];board[i][j] = ;var gridCell = document.getElementById('grid-cell-'+i+'-'+j);gridCell.innerHTML = '';var gridCellk = document.getElementById('grid-cell-'+k+'-'+j);gridCellk.innerHTML = board[k][j];gridCellk.style.backgroundColor = getNumberBackgroundColor(board[k][j]);gridCell.style.backgroundColor = '#cccb';gridCellk.style.color = getNumberColor(board[i][k]);gridCell.style.color = 'white';score += board[k][j];var showScore = document.getElementById('score');showScore.innerHTML = score;i = k;//}else {break; //跳出 var k 的for循环}}}}}}function canMoveRight(board) {for (var i = ; i < ; i++) {for (var j = ; j > -; j--) {if (board[i][j] != ) {if (board[i][j + ] == || board[i][j + ] == board[i][j]) {return true; }}}}return false;}function moveRight() {for (var i = ; i < ; i++) {for (var j = ; j > -; j--) {if (board[i][j] != ) {for (var k = j+; k < ; k++) {if(board[i][k] == || board[i][k] == board[i][j]){board[i][k] = board[i][k] + board[i][j];board[i][j] = ;var gridCell = document.getElementById('grid-cell-'+i+'-'+j);gridCell.innerHTML = '';var gridCellk = document.getElementById('grid-cell-'+i+'-'+k);gridCellk.innerHTML = board[i][k];gridCellk.style.backgroundColor = getNumberBackgroundColor(board[i][k]);gridCell.style.backgroundColor = '#cccb';gridCellk.style.color = getNumberColor(board[i][k]);gridCell.style.color = 'white';score += board[i][k];var showScore = document.getElementById('score');showScore.innerHTML = score;j = k;//}else {break; //跳出 var k 的for循环}}}}}}function canMoveDown(board) {for (var j = ; j < ; j++) {for (var i = ; i > -; i--) {if (board[i][j] != ) {if (board[i + ][j] == || board[i + ][j] == board[i][j]) {return true; }}}}return false;}function moveDown() {for (var j = ; j < ; j++) {for (var i = ; i > -; i--) {if (board[i][j] != ) {for (var k = i+; k < ; k++) {if(board[k][j] == || board[k][j] == board[i][j]){board[k][j] = board[k][j] + board[i][j];board[i][j] = ;var gridCell = document.getElementById('grid-cell-'+i+'-'+j);gridCell.innerHTML = '';var gridCellk = document.getElementById('grid-cell-'+k+'-'+j);gridCellk.innerHTML = board[k][j];gridCellk.style.backgroundColor = getNumberBackgroundColor(board[k][j]);gridCell.style.backgroundColor = '#cccb';gridCellk.style.color = getNumberColor(board[i][k]);gridCell.style.color = 'white';score += board[k][j];var showScore = document.getElementById('score');showScore.innerHTML = score;i = k;//}else {break; //跳出 var k 的for循环}}}}}}function isgameover() {if (nospace(board) && nomove(board)) {gameover();}}function nomove(board) {if (canMoveDown(board) || canMoveLeft(board) || canMoveRight(board) || canMoveUp(board)) {return false;}return true;}function bounce(obj,top){clearInterval(obj.timer);var nSpeed = ;var acceleration = ;var Flag = ;obj.timer = setInterval(function (){nSpeed += acceleration;nSpeed *= .;if(obj.offsetTop + nSpeed >= top){obj.style.top = top + 'px';nSpeed *= -;}else{if(Math.abs(nSpeed) < && Math.abs(top-obj.offsetTop)<){clearInterval(obj.timer);}else{obj.style.top = obj.offsetTop + nSpeed + 'px';}}},);}function gameover() {//alert("gameover!");var gameover = document.createElement('div');gameover.id = 'showGameover';gameover.innerHTML = 'GAME OVER';var gridContainer = document.getElementById('grid-container');gridContainer.appendChild(gameover);var showGameover = document.getElementById('showGameover');showGameover.style.left = (gridContainer.offsetWidth - showGameover.offsetWidth ) / + 'px';bounce(showGameover,);}</script></head><body><header><!--<h> </h>--><a href="javascript:newgame();" id="newgamebutton"> New Game </a><p> score: <span id="score"></span></p><div id="grid-container"><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div><div class="grid-cell" id="grid-cell--"></div></div></header></body></html> 以上代码还很满意吧，都是些div+css方面的知识，代码有问题欢迎各位亲提出宝贵意见，共同学习进步，同时也非常感谢大家对武林网网站的支持,谢谢！
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