WheelEvent class
The interface represents events that occur due to the user moving a mouse wheel or similar input device.
Note: This is the standard wheel event interface to use. Old
versions of browsers implemented the non-standard and
non-cross-browser-compatible MouseWheelEvent and
MouseScrollEvent interfaces. Use this interface and avoid the
non-standard ones.
Note: Do not confuse the wheel event with the scroll event.
The default action of a wheel event is implementation-defined.
Thus, a wheel event doesn't necessarily dispatch a scroll
event. Even when it does, that doesn't mean that the delta*
values in the wheel event necessarily reflect the content's
scrolling direction. Therefore, do not rely on delta*
properties to get the content's scrolling direction. Instead,
detect value changes to scrollLeft and scrollTop of the
target in the scroll event.
Event
UIEvent
MouseEvent
WheelEvent
- Implemented types
- Available Extensions
- Annotations
-
- @JS()
- @staticInterop
Constructors
- WheelEvent(String type, [WheelEventInit? eventInitDict])
-
factory
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- domDeltaLine → int
-
no setter
- domDeltaPage → int
-
no setter
- domDeltaPixel → int
-
no setter