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A complete example of a greedy snake web game implemented by native js

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A complete example of a greedy snake web game implemented by native js

This article provides an example of a snake web game implemented by native js. Share it with you for your reference. The specific implementation method is as follows:

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<Html>

<Head>

<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>

<Title> a browser game written by native js </title>

</Head>

<Body>

</Body>

<Script>

Star = {

Init: function (){

Var bigDiv = this. appendEle (this. addStyle (this. creatEle (),

{W: '000000', h: '000000', p: 'absolute ', t: 10, l: 900 }));

For (var I = 0; I <600/30; I ++ ){

Star. data. arrayAll [I] = [];

For (var j = 0; j <900/30; j ++ ){

Div = this. addStyle (this. creatEle (), {w :(! + [1,]? 30: 28), h :(! + [1,]? 30: 28), f: 'left', border: '1px solid #666 '});

Div. setAttribute ('number', I * 30 + j)

This. appendEle (div, bigDiv)

Star. data. arrayAll [I] [j] = div;

}

}

BigDiv = this. appendEle (this. addStyle (this. creatEle (),

{W: '000000', h: '000000', p: 'absolute ', t: 10, l: 900 }));

This. pushEleInSelect (Star. data. arrayAll [9] [15], Star. data. arrayAll [9] [14], Star. data. arrayAll [9] [13])

This. keyBoard. apply (this, arguments );

This. appearPoint ();

This. leftGo ();

},

AppearPoint: function (){

Var arrayIn = [];

Var number;

For (var I = 0; I <600; I ++ ){

If (! This. hasInArray (Star. data. arrayAll [parseInt (I/30)] [I % 30]. getAttribute ('number'), Star. data. arraySelect )){

ArrayIn. push (Star. data. arrayAll [I])

}

}

Star. data. foodNumber = number = parseInt (Math. random () * arrayIn. length );

This. giveColor (number)

},

GiveColor: function (number ){

Var div = Star. data. arrayAll [parseInt (number/30)] [number % 30];

Star. timeInterval. timeB = setInterval (function (){

If (div. className = 'shanghai '){

Div. className =''

Div. style. backgroundColor = '# fff'

}

Else {

Div. className = 'shanshuo ';

Div. style. backgroundColor = '# f00'

}

}, 500)

},

DisappearColor: function (){

ClearInterval (Star. timeInterval. timeB );

Star. data. arrayAll [parseInt (Star. data. foodNumber/30)] [Star. data. foodNumber % 30]. style. backgroundColor = '# f00 ';

},

HasInArray: function (number, array ){

For (var I in array ){

If (array [I] instanceof Array ){

If (this. hasInArray (number, array [I]) {

Return true;

}

}

If (array [I]. getAttribute & array [I]. getAttribute ('number') = number) return true;

}

Return false;

},

KeyBoard: function (){

Var self = this;

Document. onkeydown = function (e ){

E = e? E: window. event;

Switch (e. keyCode ){

Case 37: if (Star. keycode = 37 | Star. keycode = 39) {return ;}; self. leftGo (); break;

Case 38: if (Star. keycode = 38 | Star. keycode = 40) {return ;}; self. upGo (); break;

Case 39: if (Star. keycode = 37 | Star. keycode = 39) {return ;}; self. rightGo (); break;

Case 40: if (Star. keycode = 38 | Star. keycode = 40) {return ;}; self. downGo (); break;

}

}

},

LeftGo: function (){

Var div, number, self = this;

Star. keycode = 37;

ClearInterval (Star. timeInterval. timeA)

Star. timeInterval. timeA = setInterval (function (){

Number = Star. data. arraySelect [0]. getAttribute ('number ');

If (number % 30 <= 0 | self. hasInArray (number-1, Star. data. arraySelect )){

Self. guanle ();

}

Else {

If (Star. data. foodNumber = number-1 ){

Self. pushEleInSelect (Star. data. arrayAll [parseInt (Star. data. foodNumber/30)] [Star. data. foodNumber % 30]);

Self. disappearColor ();

Self. appearPoint ();

}

Else {

Div = Star. data. arraySelect. pop ();

Div. style. background = '# fff ';

Self. pushEleInSelect (Star. data. arrayAll [parseInt (number/30)] [number % 30-1]);

}

}

}, Star. timeInterval. speed)

},

UpGo: function (){

Var div, number, self = this;

Star. keycode = 38;

ClearInterval (Star. timeInterval. timeA)

Star. timeInterval. timeA = setInterval (function (){

Number = parseInt (Star. data. arraySelect [0]. getAttribute ('number '));

If (parseInt (number/30) <= 0 | self. hasInArray (number-30, Star. data. arraySelect )){

Self. guanle ();

}

Else {

If (Star. data. foodNumber = number-30 ){

Self. pushEleInSelect (Star. data. arrayAll [parseInt (Star. data. foodNumber/30)] [Star. data. foodNumber % 30]);

Self. disappearColor ();

Self. appearPoint ();

}

Else {

Div = Star. data. arraySelect. pop ();

Div. style. background = '# fff ';

Self. pushEleInSelect (Star. data. arrayAll [parseInt (number/30)-1] [number % 30]);

}

}

}, Star. timeInterval. speed)

},

RightGo: function (){

Var div, number, self = this;

Star. keycode = 39;

ClearInterval (Star. timeInterval. timeA)

Star. timeInterval. timeA = setInterval (function (){

Number = parseInt (Star. data. arraySelect [0]. getAttribute ('number '));

If (parseInt (number % 30)> = 29 | self. hasInArray (number + 1, Star. data. arraySelect )){

Self. guanle ();

}

Else {

If (Star. data. foodNumber = number + 1 ){

Self. pushEleInSelect (Star. data. arrayAll [parseInt (Star. data. foodNumber/30)] [Star. data. foodNumber % 30]);

Self. disappearColor ();

Self. appearPoint ();

}

Else {

Div = Star. data. arraySelect. pop ();

Div. style. background = '# fff ';

Self. pushEleInSelect (Star. data. arrayAll [parseInt (number/30)] [number % 30 + 1]);

}

}

}, Star. timeInterval. speed)

},

DownGo: function (){

Var div, number, self = this;

Star. keycode = 40;

ClearInterval (Star. timeInterval. timeA)

Star. timeInterval. timeA = setInterval (function (){

Number = parseInt (Star. data. arraySelect [0]. getAttribute ('number '));

If (parseInt (number/30)> = 19 | self. hasInArray (number + 30, Star. data. arraySelect )){

Self. guanle ();

}

Else {

If (Star. data. foodNumber = number + 30 ){

Self. pushEleInSelect (Star. data. arrayAll [parseInt (Star. data. foodNumber/30)] [Star. data. foodNumber % 30]);

Self. disappearColor ();

Self. appearPoint ();

}

Else {

Div = Star. data. arraySelect. pop ();

Div. style. background = '# fff ';

Self. pushEleInSelect (Star. data. arrayAll [parseInt (number/30) + 1] [number % 30]);

}

}

}, Star. timeInterval. speed)

},

Guanle: function (){

Alert ('hit the wall, total score: '+ (Star. data. arraySelect. length-3) * parseInt (1000/Star. timeInterval. speed ));

Location. reload ();

},

CreatEle: function (tag ){

Var tagName = tag | 'div'

Return document. createElement (tagName)

},

AppendEle: function (ele, father ){

Var father = father | document. body | document.doc umentElement

Father. appendChild (ele)

Return ele;

},

AddStyle: function (ele, css ){

For (var I in css ){

Switch (I ){

Case 'B': ele. style. background = css [I]; break;

Case 'l': ele. style. left = css [I] + 'px '; break;

Case 'r': ele. style. right = css [I] + 'px '; break;

Case 'T': ele. style. top = css [I] + 'px '; break;

Case 'D': ele. style. down = css [I] + 'px '; break;

Case 'p': ele. style. position = css [I]; break;

Case 'W': ele. style. width = css [I] + 'px '; break;

Case 'H': ele. style. height = css [I] + 'px '; break;

Case 'F': ele.style.css Float = css [I]; ele. style. styleFloat = css [I]; break;

Default: ele. style [I] = css [I]; break;

}

}

Return ele;

},

PushEleInSelect: function (){

For (var I = 0; I <arguments. length; I ++ ){

Star. data. arraySelect = [arguments [I]. concat (Star. data. arraySelect)

This. addStyle (arguments [I], {B: '# f00 '})

}

}

}

Star. data = {

ArrayAll: [],

ArraySelect: [],

NewPoint: null,

FoodNumber: 0

}

Star. timeInterval = {

TimeA: null,

TimeB: null

}

Star. keycode = 0;

Window. onload = function (){

Var select = Star. creatEle ('select ');

Var optionDefault = Star. creatEle ('option ');

OptionDefault. innerHTML = 'select level'

Star. appendEle (optionDefault, select)

Star. addStyle (select, {w: 200, h: 30, p: 'absolute ', left: '000000', top: '000000 '})

For (var I = 0; I <10; I ++ ){

Var option = Star. creatEle ('option ');

Option. innerHTML = 'di' + (I + 1) + 'interval'

Star. appendEle (option, select );

}

Star. appendEle (select)

Select. onchange = function (){

SelectValue = select. options [select. selectedIndex]. value | select. options [select. selectedIndex]. innerHTML

Var number = selectValue. match (/\ d +/) [0]

Star. timeInterval. speed = parseInt (200/number );

Star. addStyle (select, {display: 'none '});

Star. init ();

}

}

</Script>

</Html>

I hope this article will help you design javascript programs.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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