首先看下效果图
效果图
代码：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>纯CSS特效-矩阵数字雨动画</title>
<!--适应移动端-->
<meta name="viewport" content="width=device-width, initial-scale=1">
<!--css样式-->
<style>
body {
margin: 0;
overflow: hidden;
}
</style>
<!--引用jquery库-->
<script src="https://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script>
</head>
<body>
<canvas id="q" width="100%" height="100%">
<script>const s = window.screen;
const w = (q.width = s.width);
const h = (q.height = s.height);
const ctx = q.getContext("2d");
const p = Array(Math.floor(w / 10) + 1).fill(0);
const random = (items) => items[Math.floor(Math.random() * items.length)];
const hex = "023456789ABCDEFGHKLMNOPQRSTUVWXYZ*****".split("");
setInterval(() => {
ctx.fillStyle = "rgba(0,0,0,.05)";
ctx.fillRect(0, 0, w, h);
ctx.fillStyle = "#0f0";
p.map((v, i) => {
ctx.fillText(random(hex), i * 10, v);
p[i] = v >= h || v > 50 + 10000 * Math.random() ? 0 : v + 10;
});
}, 1000 / 30);
</script>
</canvas>
</body>
</html>
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