get row by index

Question

how can you get a row by the index?

var rows = $('tr', tbl);
rows.index(0).addClass('my_class');

Answer 1

Use .eq().

var rows = $('tr', tbl);
rows.eq(0).addClass('my_class');

...or for your simple case, .first():

rows.first().addClass('my_class');

Answer 2

Using either the eq() function:

rows.eq(0).addClass('my_class');

Or the :eq() selector:

$('tr:eq(0)', tbl).addClass('my_class');