Search & Replace row in table?

My page populates a table with a list of names and other information from a
JavaScript object. I receive changes (adds, change & delete) to that list,
convert it into a JavaScript object. I do understand how to add the new
names to the list.

I have 3 questions:

1) How can I search through the table rows to find the rows to be changed
or removed?

2) How can I resort the table, so the names continue to appear in
alphabetical order.

3) How can change or remove data in the cells, once I've found the
appropriate row?

Thanks!

Mike