HTML5网页背景气泡上升.zip

代码片段: run(now) { var bubble, j, len, ref; this.update(now); this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); ref = this.bubbles; for (j = 0, len = ref.length; j < len; j ) { bubble = ref[j]; this.ctx.mo