JavaScript implementation 2048 Game example

This article mainly introduced the JavaScript implementation 2048 game example, needs the friend to be possible to refer to under

Native JavaScript code written in 2048 games. It is recommended to run under Google Browser.

2048.html

The code is as follows:

Tap to start:-)

2048.css

The code is as follows:

@charset "Utf-8";

#div2048

{

width:500px;

height:500px;

Background-color: #b8af9e;

margin:0 Auto;

position:relative;

}

#start

{

width:500px;

height:500px;

line-height:500px;

Display:block;

Text-align:center;

font-size:30px;

Background: #f2b179;

Color: #FFFFFF;

}

#div2048 Div.tile

{

margin:20px 0px 0px 20px;

width:100px;

height:40px;

padding:30px 0;

font-size:40px;

line-height:40px;

Text-align:center;

Float:left;

}

#div2048 div.tile0{

Background: #ccc0b2;

}

#div2048 Div.tile2

{

Color: #7c736a;

Background: #eee4da;

}

#div2048 div.tile4

{

Color: #7c736a;

Background: #ece0c8;

}

#div2048 Div.tile8

{

Color: #fff7eb;

Background: #f2b179;

}

#div2048 Div.tile16

{

Color: #fff7eb;

Background: #f59563;

}

#div2048 div.tile32

{

Color: #fff7eb;

Background: #f57c5f;

}

#div2048 div.tile64

{

Color: #fff7eb;

Background: #f65d3b;

}

#div2048 div.tile128

{

Color: #fff7eb;

Background: #edce71;

}

#div2048 div.tile256

{

Color: #fff7eb;

Background: #edcc61;

}

#div2048 div.tile512

{

Color: #fff7eb;

Background: #ecc850;

}

#div2048 div.tile1024

{

Color: #fff7eb;

Background: #edc53f;

}

#div2048 div.tile2048

{

Color: #fff7eb;

Background: #eec22e;

}

2048.js

Copy code code as follows:

function game2048 (Container)

{

This.container = container;

This.tiles = new Array (16);

}

Game2048.prototype = {

Init:function () {

for (var i = 0, len = this.tiles.length i < len; i++) {

var tile = this.newtile (0);

Tile.setattribute (' index ', i);

This.container.appendChild (tile);

This.tiles[i] = tile;

}

This.randomtile ();

This.randomtile ();

},

Newtile:function (val) {

var tile = document.createelement (' div ');

This.settileval (Tile, Val)

return tile;

},

Settileval:function (Tile, val) {

Tile.classname = ' Tile tile ' + val;

Tile.setattribute (' Val ', Val);

tile.innerhtml = val > 0? Val: ';

},

Randomtile:function () {

var zerotiles = [];

for (var i = 0, len = this.tiles.length i < len; i++) {

if (This.tiles[i].getattribute (' val ') = = 0) {

Zerotiles.push (This.tiles[i]);

}

}

var rtile = Zerotiles[math.floor (Math.random () * zerotiles.length)];

This.settileval (Rtile, Math.random () < 0.8? 2:4);

},

Move:function (direction) {

var J;

switch (direction) {

Case ' W ':

for (var i = 4, Len = This.tiles.length i < len; i++) {

j = i;

while (J >= 4) {

This.merge (This.tiles[j-4], this.tiles[j]);

J-= 4;

}

}

Break

Case ' S ':

for (var i = one; I >= 0; i--) {

j = i;

while (J <= 11) {

This.merge (This.tiles[j + 4], this.tiles[j]);

j + + 4;

}

}

Break

Case ' A ':

for (var i = 1, len = This.tiles.length i < len; i++) {

j = i;

while (j% 4!= 0) {

This.merge (This.tiles[j-1], this.tiles[j]);

J-= 1;

}

}

Break

Case ' D ':

for (var i = i >= 0; i--) {

j = i;

while (j% 4!= 3) {

This.merge (This.tiles[j + 1], this.tiles[j]);

j + + 1;

}

}

Break

}

This.randomtile ();

},

Merge:function (Prevtile, Currtile) {

var prevval = Prevtile.getattribute (' Val ');

var currval = Currtile.getattribute (' Val ');

if (currval!= 0) {

if (Prevval = = 0) {

This.settileval (Prevtile, currval);

This.settileval (currtile, 0);

}

else if (Prevval = = Currval) {

This.settileval (Prevtile, Prevval * 2);

This.settileval (currtile, 0);

}

}

},

Equal:function (Tile1, Tile2) {

Return Tile1.getattribute (' val ') = = Tile2.getattribute (' Val ');

},

Max:function () {

for (var i = 0, len = this.tiles.length i < len; i++) {

if (This.tiles[i].getattribute (' val ') = = 2048) {

return true;

}

}

},

Over:function () {

for (var i = 0, len = this.tiles.length i < len; i++) {

if (This.tiles[i].getattribute (' val ') = = 0) {

return false;

}

if (i% 4!= 3) {

if (This.equal (This.tiles[i], this.tiles[i + 1])) {

return false;

}

}

if (I < 12) {

if (This.equal (This.tiles[i], This.tiles[i + 4])) {

return false;

}

}

}

return true;

},

Clean:function () {

for (var i = 0, len = this.tiles.length i < len; i++) {

This.container.removeChild (This.tiles[i]);

}

This.tiles = new Array (16);

}

}

var game, Startbtn;

Window.onload = function () {

var container = document.getElementById (' div2048 ');

STARTBTN = document.getElementById (' start ');

Startbtn.onclick = function () {

This.style.display = ' None ';

Game = Game | | New game2048 (container);

Game.init ();

}

}

Window.onkeydown = function (e) {

var keynum, Keychar;

if (window.event) {//IE

Keynum = E.keycode;

}

else if (E.which) {//Netscape/firefox/opera

Keynum = E.which;

}

Keychar = String.fromCharCode (keynum);

if ([' W ', ' S ', ' A ', ' D '].indexof (Keychar) >-1) {

if (Game.over ()) {

Game.clean ();

StartBtn.style.display = ' block ';

startbtn.innerhtml = ' Game over, replay? '

Return

}

Game.move (Keychar);

}

}

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