ReadonlykindThe read-only DataTransferItem.kind property returns the kind–a string or a file–of the DataTransferItem object representing the drag data item.
ReadonlytypeThe read-only DataTransferItem.type property returns the type (format) of the DataTransferItem object representing the drag data item.
If the item is a file, the DataTransferItem.getAsFile() method returns the drag data item's File object.
The DataTransferItem.getAsString() method invokes the given callback with the drag data item's string data as the argument if the item's DataTransferItem.kind is a Plain unicode string (i.e., kind is string).
If the item described by the DataTransferItem is a file, webkitGetAsEntry() returns a FileSystemFileEntry or FileSystemDirectoryEntry representing it.
The
DataTransferItemobject represents one drag data item.MDN Reference