JAVASCRIPT

jquery select by name

element = $('input[name="element_name"]');

jquery get select name value

var mySelect = $('select[name=' + name + ']')

select name get option value jquery

 var filter_caterer = $('#filter_caterer').val();
            if (filter_caterer !== '') {
                url += '&filter_caterer=' + encodeURIComponent(filter_caterer);
            }