1. Dart
2. dart:html
3. PerformanceResourceTiming
4. requestStart property

PerformanceResourceTiming class

1. Properties
2. connectEnd
3. connectStart
4. decodedBodySize
5. domainLookupEnd
6. domainLookupStart
7. encodedBodySize
8. fetchStart
9. initiatorType
10. nextHopProtocol
11. redirectEnd
12. redirectStart
13. requestStart
14. responseEnd
15. responseStart
16. secureConnectionStart
17. serverTiming
18. transferSize
19. workerStart
20. duration
21. entryType
22. hashCode
23. name
24. runtimeType
25. startTime
26. Methods
27. noSuchMethod
28. toString
29. Operators
30. operator ==

num get requestStart native;