Question

I want, given a table id and a row index (0-based), to select the row at that index so that I can apply a background color to all of its td’s. I’m familiar with basic selection, but am not sure how to do this using an index variable.

Answer 1

This should do the trick for you:

$('#id tbody > tr').eq(rowindex)

or, per your request in comments:

$('#id tbody > tr').eq(rowindex).children().addClass('myClass');