1. Dart
2. dart:html
3. PaymentInstruments
4. has method

##### PaymentInstruments class

1. Properties
2. hashCode
3. runtimeType
4. Methods
5. clear
6. delete
7. get
8. has
9. keys
10. set
11. noSuchMethod
12. toString
13. Operators
14. operator ==

# has method

Future has (String instrumentKey)

## Implementation

    Future has(String instrumentKey) =>
        promiseToFuture(JS("", "#.has(#)", this, instrumentKey));