The clipboardData property of the ClipboardEvent interface holds a DataTransfer object, which can be used to:
cut and copy event handlers, typically with a setData(format, data) call;paste event handler, typically with a getData(format) call.See the cut, copy, and paste events documentation for more information.
A DataTransfer object.
The property can be null when the event is created using the constructor. It is never null when dispatched by the browser.
copy, cut, pasteClipboardEvent interface it belongs to.