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Components / TreeList / API / ExpandEvent /

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ExpandEvent

Arguments for the TreeList expand and collapse events (see examples).

Name	Type	Default	Description
dataItem	`any`		The expanded/collapsed data item.
sender	`TreeListComponent`		The TreeList component that triggered the event.

Methods

isDefaultPrevented

Returns true if the event was prevented by any of its subscribers.

Returns
`boolean`	`true` if the default action was prevented. Otherwise, returns `false`.

preventDefault
Prevents the default action for a specified event. In this way, the source component suppresses the built-in behavior that follows the event.

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