How to place a border at the end of a table for a file with hundreds of tables?

@palala fog 

main();
function main(){
	var myTables = app.selection[0].tables.everyItem().getElements();
	for (var i=0; i<myTables.length;i++)
	{
		myTables[i].bottomBorderStrokeWeight = "1mm";
	};
}

This will process ONLY selection - so in order to process whole Story - you need to select all the Text in the Story.

Selecting only one TextFrame - will process only Tables in this TextFrame.

If you select only few Paragraphs in the Text - only Tables in the Selection will get processed.

If you have Tables in separte Stories - then this code would have to be modified.

There are more setting you can change:

https://www.indesignjs.de/extendscriptAPI/indesign-latest/#Table.html

Same with Left, Right & Top edges.

• Create a Cell Style with the bottom border you want.
• Define your Table Style to have 1 Footer row.
• In Table Style Options, assign your Cell Style to the Footer row.

Some tweaking may be needed to get a footer row only where you want it, but that sequence should do it.

This is a Cell Style named 'Footy,' applied in Table Style Options to the Footer row of Table Style 'Footed':

Can you show us a sample-table?

(^/)  The Jedi