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JavaScript 2048 游戏实例代码(简单易懂)

 更新时间：2016年03月25日 09:10:01   作者：前端爱好者  
使用javascript制作的2048小游戏非常好玩，有意思，下面给大家分享使用javascript代码制作的2048游戏，需要的朋友参考下吧

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脚本之家网站的支持,谢谢！

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