html5 canvas线条下落动画.zip

代码片段： function draw(){ var i; ctx.clearRect(0,0,c.width,c.height); for (i = 0; i < n; i ){ ctx.fillStyle = lines[i].color; ctx.fillRect(lines[i].x, lines[i].y, lines[i].width, lines[i].height); lines[i].y = lines[i].speed; if (lines[i].y > c.height) lines[i].y = 0 - lines[i].height; } requestAnimationFrame(draw); }