1. Dart
2. dart:js_util
3. hasProperty function

##### dart:js_util library

1. Functions
2. callConstructor
3. callMethod
4. getProperty
5. hasProperty
6. instanceof
7. jsify
8. newObject
9. promiseToFuture
10. setProperty

description

# hasProperty function Null safety

bool hasProperty (

1. Object o,
2. Object name

)

## Implementation

    bool hasProperty(Object o, Object name) => JS('bool', '# in #', name, o);