猜数字游戏改版（换种方式实现，如:表单版的猜数字游戏，通过文本框进行输入，或者其它你能想到的小游戏或小特效）
其他游戏贪吃蛇？？
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>贪吃蛇</title>
</head>
<body>
<canvas id="can" width="400" height="400" style="background: Black"></canvas>
<script>
var sn = [42, 41],
dz = 43,
fx = 1,
n, ctx = document.getElementById("can").getContext("2d");
function draw(t, c) {
ctx.fillStyle = c;
ctx.fillRect(t % 20 * 20 + 1, ~~(t / 20) * 20 + 1, 18, 18);
}
document.onkeydown = function(e) {
fx = sn[1] - sn[0] == (n = [-1, -20, 1, 20][(e || event).keyCode - 37] || fx) ? fx : n
};
! function() {
sn.unshift(n = sn[0] + fx);
if (sn.indexOf(n, 1) > 0 || n < 0 || n > 399 || fx == 1 && n % 20 == 0 || fx == -1 && n % 20 == 19)
return setTimeout(function() {
alert("游戏结束！");
window.location.href = window.location.href;
}, 200);
draw(n, "Lime");
if (n == dz) {
while (sn.indexOf(dz = ~~(Math.random() * 400)) >= 0);
draw(dz, "Yellow");
} else
draw(sn.pop(), "Black");
setTimeout(arguments.callee, 130);
}();
</script>
</body>
</html>