canvas实现黑客帝国代码雨
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发布时间: 2021-09-02 09:58:29
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先来看实现效果：http://code.wubin.work/
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<title>黑客帝国代码雨
</title>
<style type="text/css">
/*basic reset*/
*{margin:0;padding:0;}
body{background:black;}
canvas{display:block;}
</style>
</head>
<body>
<canvas id="c"></canvas>
<script type="text/javascript">
var c=document.getElementById("c");
var ctx= c.getContext("2d");
c.height=window.innerHeight;
c.width=window.innerWidth;
var chinese="010110";
chinese=chinese.split("");
var font_size=10;
var columns=c.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,c.width,c.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>c.height&&Math.random()>0.975)
drops[i]=0;
drops[i]++;
}
}
setInterval(draw,50);
</script>
</body>
</html>需要的同学自行拿去即可~
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