Difference between this and element

this & element: this can be used in any objects to reference the current object and member methods.

In forms the collection of objects is contained within a FormRun object. You can reference members in the outer formrun object by using the element reference.

If your code is placed at the top level there are no functional difference between this and element.

If your code is placed in a formdatasource but this will reference the datasource but element will reference the formrun.

You cannot use element to refer table or class object.