Package-level declarations

The DataTransfer object is used to hold any data transferred between contexts, such as a drag and drop operation, or clipboard read/write. It may hold one or more data items, each of one or more data types.

The DataTransferItem object represents one drag data item. During a drag operation, each DragEvent has a dataTransfer property which contains a list of drag data items. Each item in the list is a DataTransferItem object.

The DataTransferItemList object is a list of DataTransferItem objects representing items being dragged. During a drag operation, each DragEvent has a dataTransfer property and that property is a DataTransferItemList.