pub type OnBeforeUnloadEventHandler<D> = Option<RootedCallback<OnBeforeUnloadEventHandlerNonNull<D>>>;Aliased Type§
pub enum OnBeforeUnloadEventHandler<D> {
None,
Some(RootedCallback<OnBeforeUnloadEventHandlerNonNull<D>>),
}Variants§
None
No value.
Some(RootedCallback<OnBeforeUnloadEventHandlerNonNull<D>>)
Some value of type T.