1. Dart
2. dart:html
3. OverconstrainedError
4. constraint property

##### OverconstrainedError class

1. Constructors
2. OverconstrainedError
3. Properties
4. constraint
5. hashCode
6. message
7. name
8. runtimeType
9. Methods
10. noSuchMethod
11. toString
12. Operators
13. operator ==

description

# constraint property Null safety

String? constraint

## Implementation

    String? get constraint native;