代码雨的玩法

东倒西歪小田螺

2024-03-19 帮助7人

今天学了一个新玩意，看起来很有科技感，代码雨，像下雨一样

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            padding: 0;
            margin: 0;
            overflow: hidden;
        }
    </style>
</head>
<body>
    <canvas id="canvas"></canvas>
    <script src="./index.js"></script>
</body>
</html>

-ts

let canvas:HTMLCanvasElement | null = document.querySelector('canvas') as HTMLCanvasElement
let ctx = canvas.getContext('2d') as any
canvas.width = screen.availWidth
canvas.height = screen.availHeight
let str: string = 'lxmheiheihei'
let Arr = Array(Math.ceil(canvas.width / 10)).fill(0)
const rain = () => {
    ctx.fillStyle = 'rgba(0,0,0,0.05)'
    ctx.fillRect(0,0,canvas.width,canvas.height)
    ctx.fillStyle = '#0f0'
    Arr.forEach((item, index) => {
        ctx.fillText(str[Math.floor(Math.random() * str.length)],index * 10, item   10)
        Arr[index] = item > canvas.height || item > 10000 * Math.random() ? 0: item   10
    })
}
setInterval(rain, 50)

这篇好文章是转载于：学新通技术网

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