The createTFoot() method of HTMLTableElement objects returns the <tfoot> element associated with a given <table>. If no footer exists in the table, this method creates it, and then returns it.
Note: If no footer exists, createTFoot() inserts a new footer directly into the table. The footer does not need to be added separately as would be the case if Document.createElement() had been used to create the new <tfoot> element.