What is difference between AngularJS 1 and Angularjs 2?

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Tags

1. #angular
2. #rewritten
3. #typescript
4. #controllers
5. #doesn
6. #directives
7. #javascript
8. #components
9. #changed
10. #which
11. #syntax
12. #superset
13. #structural
14. #completely
15. #upgrade
16. #replaced