What is the use of $Watch in AngularJS?

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Tags

1. #using
2. #digest
3. #framework
4. #changes
5. #watching
6. #calls
7. #scope
8. #object
9. #application
10. #watches
11. #variable
12. #watch
13. #function
14. #points
15. #means
16. #created
17. #later
18. #which
19. #cover
20. #angularjs