I have a relatively huge data grid, containing let's say 100 columns and 100 rows. Hence there are 10.000 data cells, aka
If the properties don't change how the page gets rendered, then you will either don't have any or just a very slight performance difference. You will use a bit more memory though. Not so much that it would cause problems, but if you need to download it with a very slow internet speed, then you may have a bit öf speed decrease. (If you use chrome, you should test the page with net speed throttling. I'm not sure about firefox)
If you create every element manually, then adding a bonus property would only add a small difference, as you already need to create every element and put ither attributes on them.