1. Dart
2. dart:html
3. IntersectionObserver
4. observe method

##### IntersectionObserver class

1. Constructors
2. IntersectionObserver
3. Properties
4. hashCode
5. root
6. rootMargin
7. runtimeType
8. thresholds
9. Methods
10. disconnect
11. noSuchMethod
12. observe
13. takeRecords
14. toString
15. unobserve
16. Operators
17. operator ==

description

# observe method Null safety

void observe (

1. Element target

)

## Implementation

    void observe(Element target) native;