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代码说明：

说明：  JS抖音弹球打砖块小游戏，玩家通过鼠标滑动控制挡板左右移动，接住击打砖块而改变飞行轨迹掉落下来的小球，小球的速度越快难度就越大。(JS jitter Pinball brick game, the player through the mouse sliding control baffle left and right movement, catch hit bricks and change the flight trajectory of the ball dropped, the faster the ball is more difficult.)