php - Ajax post to codeigniter controller giving 404, but making it to the controller? -

this working perfect me , team locally, once pull live server , try it, gives me 404 error still provides error response login function in controller. i've been trying figure out several hours no luck, , other posts haven't helped. i'm hoping it's stupidly simple i'm not seeing.

edit: important part post data doesn't sent on server, locally.

ajax call:

    var username = $('#loginusername').val();     var password = $('#loginpassword').val();      var data = {         "username": username,         "password": password     };      $.ajax({         type: "post",         url: "<?php echo base_url(); ?>login",         data: data,         success: function(response) {             //response code         }     }); 

controller function being called:

public function login() {     $data = $_post;      if(!$data) {         //error code     } else {         //success code     } } 

and if helps, here's .htaccess:

<ifmodule mod_rewrite.c> rewriteengine on rewritebase /  #removes access system folder users. #additionally allow create system.php controller, #previously not have been possible. #'system' can replaced if have renamed system folder. rewritecond %{request_uri} ^system.* rewriterule ^(.*)$ /index.php?/$1 [l]  #when application folder isn't in system folder #this snippet prevents user access application folder #submitted by: fabdrol #rename 'application' applications folder name. rewritecond %{request_uri} ^application.* rewriterule ^(.*)$ /index.php?/$1 [l]  #checks see if user attempting access valid file, #such image or css document, if isn't true sends #request index.php rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewriterule ^(.*)$ index.php?/$1 [l] </ifmodule>  <ifmodule !mod_rewrite.c>     errordocument 404 /index.php </ifmodule> 

if running on localhost means may controller name writing having case sensitive problem. first check case sensitive problem try url: "<?php echo site_url('controllername/functionname'); ?>"