Hi,
> I hope that explains it better.
No, it does not.
Implementation depends on your tested application, conditions and your needs.
For example, if the value you are looking for is unique, then you may just search for it within entire page. Or within the given table.
If you must find the cell on the intersection of the given row and column, then you must find a way to get the required row and column and than find a way to find an object that corresponds their intersection. (In modern web applications table does not necessarily have a <Table> markup, likewise cells do not necessarily have a <TD> markup.)
If your table is long and lines that are out of view are populated only when they are scrolled into view, then you will have to search for the data within the view, scroll and search again until search success or data end.
So the more actual information and data, but not generic description that is applicable to any dynamic table, you provide, the better are chances to get a helpful piece of advice...