In this chapter, you learned how to create tweens, collisions, and so on. You also learned how to pass through particle generation and create a complete working game.
There is something you should do to get more familiar with Cocos2d-JS, that is, use what you learned until now and improve the game. You can try to switch the control mode from mouse-driven to touch-driven, display text with the maximum distance travelled without hitting an asteroid, and increase the difficulty level every n seconds without hitting asteroids by making asteroids faster or appear more often.
Now, you are ready to dive into the next chapter where touch controls will become more interactive thanks to swipe detection.