1. The data type of the object is determined
2.Es5 by an array map method
3. Using an array of map reduce implementation method
4.ES5 by an array filter method
5. Method reduce implementation filter
6.ES5 implement an array of some methods
7.Es5 reduce an array of methods to achieve
8. Reduce method implemented using flat array
9. achieve Es6 of class syntax
10. The function currying
11. currying function (with placeholders)
12. partial function
Nashuqie 13. Fibonacci column machine optimization
14. A method of implementing a function bind
15. A method of implementing a function call
Simple module 16. CO
17. The image stabilization function
18. throttling function
19. lazy loading images
20.new keyword
21. achieve Object.assign
22.instanceof
23. The realization of private variables
24. shuffling algorithm
25 singleton
26.promisfy
27. The process elegant async / await
28. publish and subscribe EventEmitter