1. Dart
2. dart:html
3. DomTokenList
4. add method

##### DomTokenList class

1. Properties
2. hashCode
3. length
4. runtimeType
5. value
6. Methods
7. add
8. contains
9. item
10. noSuchMethod
11. remove
12. replace
13. supports
14. toggle
15. toString
16. Operators
17. operator ==

description

# add method Null safety

void add (

1. String tokens

)

## Implementation

    void add(String tokens) native;