| Interface | JS API Coverage | Implementation status | ||
| #Constants | #Attributes | #Functions | ||
| BeforeUnloadEvent | 2 | |||
| CompositionEvent | 1 | |||
| DeviceMotionEvent | 4 | |||
| DeviceOrientationEvent | 4 | |||
| DocumentAndElementEventHandlers | 3 | |||
| DragEvent | 1 | |||
| EventTarget | 3 | Complete | ||
| FocusEvent | 1 | |||
| GlobalEventHandlers | 62 | |||
| HashChangeEvent | 2 | |||
| KeyboardEvent | 4 | 9 | 1 | Complete |
| MessageEvent | 5 | 1 | Unsupported | |
| MouseEvent | 21 | 2 | ||
| ProgressEvent | 3 | |||
| StorageEvent | 5 | |||
| TouchEvent | 7 | |||
| UIEvent | 2 | |||
| WindowEventHandlers | 16 | |||
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