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A complete example of the Snake web version of the game implemented in native js_javascript skills
A complete example of the Snake web version of the game implemented in native js_javascript skills
The example in this article describes the Snake web version of the game implemented in native js. Share it with everyone for your reference. The specific implementation method is as follows:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>原生js写的贪吃蛇网页版游戏</title>
</head>
<body>
</body>
<script>
Star = {
init:function(){
var bigDiv = this.appendEle(this.addStyle(this.creatEle(),
{w:'900',h:'600',p:'absolute',t:10,l:500}));
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:'900',h:'600',p:'absolute',t:10,l:500}));
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 == 'shanshuo'){
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('撞墙了,总分：' + (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.documentElement
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.cssFloat = 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 = '请选择关卡'
Star.appendEle(optionDefault,select)
Star.addStyle(select,{w:200,h:30,p:'absolute',left:'40%',top:'40%'})
for(var i = 0 ; i <10 ; i++){
var option = Star.creatEle('option');
option.innerHTML = '第' + (i+1) + '关'
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 be helpful to everyone’s JavaScript programming design.
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