The HTMLTableElement.createTFoot() method returns the <tfoot> element associated with the table, of type HTMLTableSectionElement. If there is no footer for this table, this methods creates it, then returns it.
HTMLTableElement = table.createTFoot()
myfoot = mytable.createTFoot(); //checking: myfoot == mytable.tFoot
HTMLTableElementHTMLTableElement.alignHTMLTableElement.bgColorHTMLTableElement.borderHTMLTableElement.captionHTMLTableElement.cellPaddingHTMLTableElement.cellSpacingHTMLTableElement.frameHTMLTableElement.rowsHTMLTableElement.rulesHTMLTableElement.summaryHTMLTableElement.tBodiesHTMLTableElement.tFootHTMLTableElement.tHeadHTMLTableElement.widthBeforeUnloadEventDOMStringMapDataTransferDragEventErrorEventGlobalEventHandlersHTMLAnchorElementHTMLAreaElementHTMLAudioElementHTMLBRElementHTMLBaseElementHTMLBaseFontElementHTMLBodyElementHTMLButtonElementHTMLCanvasElementHTMLContentElementHTMLDListElementHTMLDataElementHTMLDataListElementHTMLDialogElementHTMLDivElementHTMLDocumentHTMLElementHTMLEmbedElementHTMLFieldSetElementHTMLFormControlsCollectionHTMLFormElementHTMLFrameSetElementHTMLHRElementHTMLHeadElementHTMLHeadingElementHTMLHtmlElementHTMLIFrameElementHTMLImageElementHTMLInputElementHTMLIsIndexElementHTMLKeygenElementHTMLLIElementHTMLLabelElementHTMLLegendElementHTMLLinkElementHTMLMapElementHTMLMediaElementHTMLMetaElementHTMLMeterElementHTMLModElementHTMLOListElementHTMLObjectElementHTMLOptGroupElementHTMLOptionElementHTMLOptionsCollectionHTMLOutputElementHTMLParagraphElementHTMLParamElementHTMLPictureElementHTMLPreElementHTMLProgressElementHTMLQuoteElementHTMLScriptElementHTMLSelectElementHTMLShadowElementHTMLSourceElementHTMLSpanElementHTMLStyleElementHTMLTableCaptionElementHTMLTableCellElementHTMLTableColElementHTMLTableDataCellElementHTMLTableHeaderCellElementHTMLTableRowElementHTMLTableSectionElementHTMLTextAreaElementHTMLTimeElementHTMLTitleElementHTMLTrackElementHTMLUListElementHTMLUnknownElementHTMLVideoElementHashChangeEventHistoryImageDataLocationMessageChannelMessageEventMessagePortNavigatorNavigatorGeolocationNavigatorIDNavigatorLanguageNavigatorOnLineNavigatorPluginsPageTransitionEventPluginPluginArrayPopStateEventRadioNodeListTransferableValidityStateWebVTTWindowWindowBase64WindowEventHandlersWindowTimers