!--NEWSZW_HZH_BEGIN--
代码很简略，这里就不多BB了，小火伴们直接看示例吧
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="https://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=gb2312" />
<title>无题目文档</title>
</head>
<body>
<style>
*{
margin:0;
padding:0;
}
#wrap{
position:relative;width:400px;height:400px;
border:1px solid #ccc;
margin:10px auto;
}
.snak, .snakBody{
position:absolute;
width:10px;height:10px;
background:#666;
}
.food{
position:absolute;width:10px;height:10px;
background:#09F;display:block;
}
</style>
<div id="wrap">
</div>
<script src="https://ftp152341.host180.web522.com/%E6%89%93%E8%9C%9C%E8%9C%82/zepto.js"></script>
<script>
var Snak, Food;;
Food = function(op){ //op为zepto对象
var food = $("<span class="food"></span>");
food.css({ left : Math.floor(((op[0].clientWidth-10)*Math.random())), top : Math.floor(((op[0].clientHeight-10)*Math.random())) })
op.append( food );
};
Snak = function(op){
this.obj = document.createElement("div");
this.obj.className = "snak";
this.op = op;
};
Snak.prototype.ev = function(){
var _this = this, code;
$(window).bind("keydown",function(e){
clearInterval(_this.downTimer);
code = e.keyCode;
_this.downTimer = setInterval(function(){
var l = _this.obj.offsetLeft, t = _this.obj.offsetTop;
switch( code ){
case 37 :
l = l - 5;
break;
case 38 :
t = t - 5;
break;
case 39 :
l = l + 5;
break;
case 40:
t = t + 5;
break;
};
if( (l<0) || (t<0) || (l>400) || (t>400)){location.reload()};
_this.obj.style.left = l + "px";
_this.obj.style.top = t + "px";
var snakB = $(".snakBody");
for(var i=snakB.length-1; i>=0; i--){
if(i == 0){
snakB[0].style.left = l + "px";
snakB[0].style.top = t + "px";
}else{
snakB[i].style.left = snakB[i-1].offsetLeft + "px";
snakB[i].style.top = snakB[i-1].offsetTop + "px";
};
};
if( pz(_this.obj,$(".food")[0]) ){
$(".food").remove();
new Food(wrap);
$("<div class="snakBody"></div>").appendTo(wrap)
};
},30);
}).bind("keyup",function(e){
});
};
function pz(obj1,obj2){
var L1 = obj1.offsetLeft;
var T1 = obj1.offsetTop;
var R1 = L1 + obj1.offsetWidth;
var B1 = T1 + obj1.offsetHeight;
var L2 = obj2.offsetLeft;
var T2 = obj2.offsetTop;
var R2 = L2 + obj2.offsetWidth;
var B2 = T2 + obj2.offsetHeight;
if(L1 >= R2 || T1 >= B2 || R1 <= L2 || B1 <= T2){
return false;
}
return true;
};
var wrap = $("#wrap"),snak = new Snak(food);
var food = new Food( wrap );
snak.ev();
wrap.append( $("<div class="snakBody"></div>") )[0].appendChild( snak.obj );
</script>
</body>
</html>
