jquery thead th value append in every td code example

Example 1: Add table row in jQuery

$('#myTable tr:last').after('<tr>...</tr><tr>...</tr>');

//OR

$('#myTable > tbody:last-child').append('<tr>...</tr><tr>...</tr>');

Example 2: jquery append table row

$('#someTableID tr:last').after('<tr><td>Some data here</td></tr>');