在桌面新建一个.txt文件,把下面代码放进去,再把后缀名改成.html,双击打开就好了
<!DOCTYPE html> <html> <head> <title>黑客帝国</title> </head> <body> <canvas id=
"canvas"></canvas> <style type="text/css"> body { margin: 0; padding: 0;
overflow: hidden; } </style> <script type="text/javascript"> var canvas =
document.getElementById('canvas'); var ctx = canvas.getContext('2d'); canvas.
height= window.innerHeight; canvas.width = window.innerWidth; var texts =
'156dsfcac'.split(''); var fontSize = 16; var columns = canvas.width / fontSize;
// 用于计算输出文字时坐标,所以长度即为列数 var drops = []; //初始值 for (var x = 0; x < columns; x++)
{ drops[x] = 1; } function draw() { //让背景逐渐由透明到不透明 ctx.fillStyle = 'rgba(0, 0,
0, 0.05)'; ctx.fillRect(0, 0, canvas.width, canvas.height); //文字颜色 ctx.fillStyle
= '#0F0'; ctx.font = fontSize + 'px arial'; //逐行输出文字 for (var i = 0; i < drops.
length; i++) { var text = texts[Math.floor(Math.random() * texts.length)]; ctx.
fillText(text, i * fontSize, drops[i] * fontSize); if (drops[i] * fontSize >
canvas.height || Math.random() > 0.95) { drops[i] = 0; } drops[i]++; } }
setInterval(draw, 33); </script> </body> </html>

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