Find the tbody element and use append, if you want to add rows, or html, if you want to replace all rows.
$('#myTable tbody').append(someRowHtml);
$('#myTable tbody').html(someRowHtml);
Note that if you have more than one tbody element you'll also need to use the :first
selector (or nth-child
-- don't forget that, that although it's zero-based, you have a thead element) to get the correct one.
$('#myTable tbody:first').append(...);