files/en-us/web/api/mouseevent/mozinputsource/index.md
{{APIRef("Pointer Events")}} {{ Non-standard_header() }}
The MouseEvent.mozInputSource read-only property on {{domxref("MouseEvent")}} provides information indicating the type of device that generated the event.
This lets you, for example, determine whether a mouse event was generated by an actual mouse or by a touch event (which might affect the degree of accuracy with which you interpret the coordinates associated with the event).
The following values are possible.
| Constant name | Value | Description |
|---|---|---|
MOZ_SOURCE_UNKNOWN | 0 | The input device is unknown. |
MOZ_SOURCE_MOUSE | 1 | The event was generated by a mouse (or mouse-like device). |
MOZ_SOURCE_PEN | 2 | The event was generated by a pen on a tablet. |
MOZ_SOURCE_ERASER | 3 | The event was generated by an eraser on a tablet. |
MOZ_SOURCE_CURSOR | 4 | The event was generated by a cursor. |
MOZ_SOURCE_TOUCH | 5 | The event was generated on a touch interface. |
MOZ_SOURCE_KEYBOARD | 6 | The event was generated by a keyboard. |
Not part of any specification.