DragStartEvent

Represents the arguments for the dragStart event.

Name	Type	Default	Description
index	number		Specifies the index of the draggable item.
oldIndex	number		Specifies the previous index of the draggable item. This property is used for the dragEnd and dragOverevents to determine the original position of the item before dragging. It doesn't apply to thedragStart` event as there is no previous position at that point.

Methods

isDefaultPrevented
If the event was prevented by any of its subscribers, returns true.
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.