passing data from AJAX to Controller

[eluser]hrg.vincent[/eluser]
[quote author="ivantcholakov" date="1383918803"]Why these parameters should be present within the URL? You may use POST method instead.

Code:

function loadVisaStatusFn()
{
var cs_vx_no = $('#cs_vx_no').val();
var cs_passport = $('#cs_passport').val();    
var tcs_fname = $('#tcs_fname').val();  
var tcs_passport = $('#tcs_passport').val();

$.ajax({
  type: "POST",
  url: '<?php echo site_url('ajax/getVisaStatus'); ?>',
  data: {
    cs_vx_no : cs_vx_no,
    cs_passport : cs_passport,
    tcs_fname : tcs_fname,
    tcs_passport : tcs_passport
  },
  success: function(r){
   handleErrorFn(r);
   $("#rp-holder").html(r);
  }
});
}

[/quote]

I've follow your code, that is using POST method, but I can't get the data from Controller, anything wrong from my code in controller?