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本帖最后由 Spade_King 于 2022-10-11 10:25 编辑
主要是熟悉画布的使用
有兴趣的可以自己复制代码到记事本,修改后缀为html
内容变量str可自己编辑
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Code</title>
<style>
body{
margin: 0;
overflow: hidden;
}
</style>
</head>
<body>
<canvas id="myCanvas"></canvas>
<script>
const width = document.getElementById("myCanvas").width = screen.availWidth;
const height = document.getElementById("myCanvas").height = screen.availHeight;
const ctx = document.getElementById("myCanvas").getContext("2d");
const arr = Array(Math.ceil(width / 9)).fill(0);
const str = "ABCDEFGHIJKLMNOPQRS0123456789王爱罗:“{}|TUVWXYZ".split("");
function rain() {
ctx.fillStyle = "rgba(0,0,0,0.05)";
ctx.fillRect(0, 0, width, height);
ctx.fillStyle = "#0f0";
arr.forEach(function (value, index) {
ctx.fillText(str[Math.floor(Math.random() * str.length)], index * 10, value + 10);
arr[index] = value >= height || value > 8888 * Math.random() ? 0 : value + 17;
});
}
setInterval(rain, 20);
</script>
</body>
</html>
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