如何在HTML5游戏中提高许多对象的性能？
当需要显示许多物体并计算位置，碰撞检测，反应等时，我可以做些什么？我希望一切看起来都很顺利？这是我正在开发的示例。我希望如果我在屏幕上有100个球，我可以顺利地展示它们。但我不知道该怎么做。每个建议都将受到赞赏。
What things can I do when it's necessary to show many objects and calculate position, collision detection, reaction, etc. and I want everything look smoothly? Here's an example I'm developing. I want that if I have 100 balls on the screen, I can show them smoothly. But I don't have any idea of how to do it. Every suggestion will be appreciated.
在HTML5 Rock的 Canvas Performance Tutorial 。
The basic steps to improve performance in canvas can be seen in this HTML5 Rock's Canvas Performance Tutorial.
并且，如果您可以在没有Box2D的情况下*处理碰撞检测，请检查 四叉树实施。四叉树不直接处理碰撞，但可以通过减少检测碰撞所需的比较量来提高性能。
And, if you are free to handle collision detection without Box2D, check this quad-tree implementation. The quad-tree doesn't deals with collisions directly but can improve performance by reducing the amount of comparisons needed to detect the collisions.
文章建议进一步阅读：