Is ReactJS frontend?

Related questions

1. Is react JS worth learning?
2. Is react reactive?
3. Is react backend or frontend?
4. Does Facebook use react?
5. Is react js a language?
6. What is flux used for react?
7. What type of framework is react?
8. What is a purpose of shallow rendering in react?
9. Which is more difficult angular or react?
10. Is react only for front end?

Tags

1. #development
2. #official
3. #libraries
4. #place
5. #available
6. #frameworks
7. #build
8. #quality
9. #inside
10. #component
11. #javascript
12. #frontend
13. #works
14. #reactjs
15. #interfaces
16. #virtual
17. #there
18. #react
19. #found
20. #library
21. #allows
22. #based