content into a column in a selected table with existing content.

[briank83163125]

I wrote a simple script to add "." period to all the first column of my tables after the number.  I am bringing in data from excel that does not have a "." after the number. Here is the script:

var myTable = app.activeDocument.stories.everyItem().tables.everyItem().getElements(); 

var myColumns =  app.activeDocument.stories.everyItem().tables.everyItem().rows.everyItem().getElements();

for(i=0; i<myTable.length; i++)

for(t=0; t<myColumns.length; t++)

{ 

    myTable.columns[0].cells.contents += ".";

    } 

This script works the way I want it to.  It adds a period after the content that is already in the cell.

Here is my question, in case I have other tables in my document later that I do not want to add the "." to, how would I modify this script to apply it only to a selected table or column?

I know there is "app.selection" but I'm not sure how to use it correctly.

For a bonus, how do I undo the script all at once?  if I use the undo feature (ctrl z), it undoes one row at a time.  The reason I might need it is if i accidentally run the script twice, i end up with two periods.  I cand do a find/change but was wondering how to write a script that would fix the error.

Thanks

[briank83163125]

https://indesignsecrets.com/topic/only-select-tables-in-current-story

[briank83163125]

This is the Code I ended up with from reading on this site https://indesignsecrets.com/tackling-tables-through-scripting.php

var myTable = app.selection[0].tables.everyItem().getElements();

var myColumns =  app.selection[0].tables.everyItem().rows.everyItem().getElements();

for(i=0; i<myTable.length; i++)

for(t=0; t<myColumns.length; t++)

{

    myTable.columns[0].cells.contents += ".";

    }