Jquery assign value to JSP variable -

i new jquery , using jquery populate values in drop down field.

upon selection of value drop down, assigning value hidden field.

onselect: function(index,row){         var val = row.value;          alert('val '+val );                 $("#hid").val(val );         } 

how can assign value jsp variable or if use request.getparameter("hid"); need submit form again value?

edit 1

$(function(){ $('#comb').combogrid({       panelwidth:200,      url: 'myservice',       idfield:'id',       textfield:'desc'       columns: [[                   {field:'id',title:'id',width:20},                   {field:'desc',title:'desc',width:80}             ]],     onselect: function(index,row){         var val = row.value;          alert('val '+val );                 $("#hid").val(val );         } }); 

});

jsp java code runs on server side.

javascript runs on browser.

so cannot assign jsp variables using javascript.

form submit or ajax right choice situation.

---

ajax code snippet.

onselect: function(index, row) {      $.ajax({         url: '/your-url', // path url gets ajax request         method: 'get', // or http method want use         data: {             value: row.value         },         success: function(response) {             alert('boom!' + response);         }     });  } 

see jquery ajax api docs more information. there lots of options.