<!DOCTYPE html> <html><head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <title>黑客动画</title> <style> *{margin: 0; padding: 0;} body {background: black;} canvas {display: block;} </style> </head> <body> <canvas id="ad"></canvas> <script> var ad = document.getElementById("ad"); var ctx = ad.getContext("2d"); ad.height = window.innerHeight; ad.width = window.innerWidth; var chinese = "我是黑客"; chinese = chinese.split(""); var font_size = 10; var columns = ad.width / font_size; var drops = []; for (var x = 0; x < columns; x++) drops[x] = 1; function draw() { ctx.fillStyle = "rgba(0, 0, 0, 0.05)"; ctx.fillRect(0, 0, ad.width, ad.height); ctx.fillStyle = "#0F0"; ctx.font = font_size + "px arial"; for (var i = 0; i < drops.length; i++) { var text = chinese[Math.floor(Math.random() * chinese.length)]; ctx.fillText(text, i * font_size, drops[i] * font_size); if (drops[i] * font_size > ad.height && Math.random() > 0.975) drops[i] = 0; drops[i]++; } } setInterval(draw, 50); </script> </body> </html>
