以下是源代码,不做解释
<canvas id="q"></canvas> <script> 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( 阅读全文>>