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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>HTML5模仿駭客帝國文字矩陣效果</title>
</head>
<body>
 
<canvas id="q"></canvas>
<script type="text/javascript" >
var s = window.screen;
var width = q.width = s.width;
var height = q.height = s.height;
var letters = Array(256).join(1).split('');
var draw = function () {
  q.getContext('2d').fillStyle='rgba(0,0,0,.05)';
  q.getContext('2d').fillRect(0,0,width,height);
  q.getContext('2d').fillStyle='#0F0';
  letters.map(function(y_pos, index){
    text = String.fromCharCode(3e4+Math.random()*33);
    x_pos = index * 10;
    q.getContext('2d').fillText(text, x_pos, y_pos);
    letters[index] = (y_pos > 758 + Math.random() * 1e4) ? 0 : y_pos + 10;
  });
};
setInterval(draw, 33);
</script>
 
<p>更多代碼請?jiān)L問：<a href="http://www.lanrentuku.com/js/" target="_blank">懶人圖庫</a></p>
</body>
</html>

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