网页实现黑客帝国代码雨

<!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>


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网页实现黑客帝国代码雨