最近不知道咋的都玩起了用备忘录手绘圣诞树，作为万能的程序员，肯定也要跟上潮流，那用代码来实现圣诞树吧。哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈
实现效果如下：
具体代码如下，可直接cv复用
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
html,
body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
border: 0;
}
div {
margin: 0;
padding: 0;
border: 0;
}
.nav {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 27px;
background-color: white;
color: black;
text-align: center;
line-height: 25px;
}
a {
color: black;
text-decoration: none;
border-bottom: 1px dashed black;
}
a:hover {
border-bottom: 1px solid red;
}
.previous {
float: left;
margin-left: 10px;
}
.next {
float: right;
margin-right: 10px;
}
.green {
color: green;
}
.red {
color: red;
}
textarea {
width: 100%;
height: 100%;
border: 0;
padding: 0;
margin: 0;
padding-bottom: 20px;
}
.block-outer {
float: left;
width: 22%;
height: 100%;
padding: 5px;
border-left: 1px solid black;
margin: 30px 3px 3px 3px;
}
.block-inner {
height: 68%;
}
.one {
border: 0;
}
</style>
</head>
<body marginwidth="0" marginheight="0">
<canvas id="c" height="356" width="446">
<script type="text/javascript">
var collapsed = true;
function toggle() {
var fs = top.document.getElementsByTagName('frameset')[0];
var f = fs.getElementsByTagName('frame');
if (collapsed) {
fs.rows = '250px,*';
fs.noResize = false;
f[0].noResize = false;
f[1].noResize = false;
} else {
fs.rows = '30px,*';
fs.noResize = true;
f[0].noResize = true;
f[1].noResize = true;
}
collapsed = !collapsed;
}
var b = document.body;
var c = document.getElementsByTagName('canvas')[0];
var a = c.getContext('2d');
document.body.clientWidth;
M = Math;
Q = M.random;
J = [];
U = 16;
T = M.sin;
E = M.sqrt;
for (O = k = 0; x = z = j = i = k < 200;) with(M[k] = k ? c.cloneNode(0) : c) {
width = height = k ? 32 : W = 446;
with(getContext('2d')) if (k > 10 | !k)
for (font = '60px Impact', V = 'rgba('; I = i * U, fillStyle = k ? k == 13 ? V +
'205,205,215,.15)' : V + (147 + I) + ',' + (k % 2 ? 128 + I : 0) + ',' + I + ',.5)' : '#cca',
i < 7;) beginPath(fill(arc(U - i / 3, 24 - i / 2, k == 13 ? 4 - (i++) / 2 : 8 - i++, 0, M.PI *
2, 1)));
else
for (; x = T(i), y = Q() * 2 - 1, D = x * x + y * y, B = E(D - x / .9 - 1.5 * y + 1), R = 67 * (B +
1) * (L = k / 9 + .8) >> 1, i++ < W;)
if (D < 1) beginPath(strokeStyle = V + R + ',' + (R + B * L >> 0) + ',40,.1)'), moveTo(U + x *
8, U + y * 8), lineTo(U + x * U, U + y * U), stroke();
for (y = H = k + E(k++) * 25, R = Q() * W; P = 3, j < H;) J[O++] = [x += T(R) * P + Q() * 6 - 3, y += Q() *
U - 8, z += T(R - 11) * P + Q() * 6 - 3, j / H * 20 + ((j += U) > H & Q() > .8 ? Q(P = 9) * 4 :
0) >> 1
]
}
setInterval(function G(m, l) {
A = T(D - 11);
if (l) return (m[2] - l[2]) * A + (l[0] - m[0]) * T(D);
a.clearRect(0, 0, W, W);
J.sort(G);
for (i = 0; L = J[i++]; a.drawImage(M[L[3] + 1], 207 + L[0] * A + L[2] * T(D) >> 0, L[1] >> 1)) {
if (i == 2e3) a.fillText('Merry Christmas!', U, 345);
if (!(i % 7)) a.drawImage(M[13], ((157 * (i * i) + T(D * 5 + i * i) * 5) % W) >> 0, ((113 * i + (D *
i) / 60) % (290 + i / 99)) >> 0);
}
D += .02
}, 1)
</script>
</body>
</html>
通过以上代码就可以实现圣诞树，可根据需求自行修改 哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈