Pass Value Onclick Checkbox to controller codeigniter

Question

I am new to CI and i am having issues in following code: My Controller shows all the values of countries dynamically from DB, i need to pass value onclicking particular chechbox

Answer 1

HTML

  value 1
  value 2 
  value 3
  value 4

Jquery Ajax

 $(document).ready(function(){

     $(document).on('click','.chkbox',function(){
      var id=this.value;

       $.ajax({
        type: "POST",
        context: "application/json",
        data: {id:id},
        url: "http://localhost/xyz/index.php/controller_name/function_name",
        success: function(msg) 
        {
            alert('result from controller');
        }
    })
   });

 });

Controller

 public function function_name()
 {
   $id=$this->input->post('id');
   //now use the $id variable for the desired purpose.
 }