From a table row with two dropdowns, get selected value & which drop-down changed

Question

I am trying to update two cascading drop down inside a table there are many answers on SO for drop downs, but I was unable to find help on cascading updates

Answer 1

Assuming that you can't identify dropdwns by class or anything. Assuming that every time you change the value in a dropdown you want to update the other dropdown on the same row. Assuming that you have only two dropdowns per row:

$('table').on('change', 'select', function() {
    var $current_dropdown = $(this),
        $other_dropdown = $(this).closest('tr').find('select').not(this);

    /// perform any task you need with current and other dropdown

});