站长资源代码如下：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>canvas文字雨-www.wangdahai.cn</title>
<script src="http://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script>
<style>
</style>
</head>
<body>
<canvas id="c"></canvas>
<script>
var c = document.getElementById('c');
var ctx = c.getContext('2d');
c.height = window.innerHeight;
c.width = window.innerWidth;
var txts = "01";
txts = txts.split("");
var font_size = 16;
var columns = c.width / font_size;
var s = [];
for (var x = 0; x < columns; x++)
s[x] = 1;
function draw() {
ctx.fillStyle = "rgba(0,0,0, 0.05)";
ctx.fillRect(0, 0, c.width, c.height);
ctx.fillStyle = "#0F0";
ctx.font = font_size + "px arial";
for (var i = 0; i < s.length; i++) {
var text = Math.floor(Math.random() * 2);
ctx.fillText(text, i * font_size, s[i] * font_size);
if (s[i] * font_size > c.height || Math.random() > 0.95)
s[i] = 0;
s[i]++
}
}
setInterval(draw, 50);
</script>
</body>
</html>
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