Login con Ajax

[stefano86]

Ho modificato queste due parti di codice. Ora la console di Chrome mi da questo errore:
GET http://localhost/.. ./index.php?checkusr=john 404 (Not Found) javascript.js:477
checkUsr javascript.js:477
onchange index.php:82


XHR finished loading: "http://localhost/.. ./index.php?checkusr=john". javascript.js:477
checkUsrjavascript.js:477
onchange




JAVASCRIPT

function setXMLHttpRequest() {
   var xhr = null;
   //Browser standard con supporto nativo (per tutti i browser tranne Explorer)
   if(window.XMLHttpRequest) {
     xhr = new XMLHttpRequest();
   }
   //MSIE 6 con ActiveX (per Explorer)
   else if(window.ActiveXObject) {
     xhr = new ActiveXObject("Microsoft.XMLHTTP");
   }
   return xhr;
}




var xhrObj = setXMLHttpRequest();




function checkUsr(usr) {
   var url = "public/index.php?checkusr=" + usr;
   //var url = "../indexSignup.php?checkusr=" + usr;
   xhrObj.open("GET", url, true);
   xhrObj.onreadystatechange = updateUsr;
   xhrObj.send(null); RIGA 477
}




function updateUsr() {
   if(xhrObj.readyState === 4) {
      var risp = xhrObj.responseText;
      document.getElementById("reg_username").innerHTML = risp;
   }
}

PHP

   public function checkAjax() {
      if(isset($_GET['checkusr'])){
          $usr = $_GET['checkusr'];
          //$risp = $this->model->compareUsr($usr);
          $this->user = $this->userRepository->findByUsername($usr);
          if($this->user === NULL) {
            $this->ajax['succ'] = "Username disponibile.";
            $this->view->setData('ajax', $this->ajax);              
          }
          else if($risp  > 0) {
            $this->ajax['err'] = "Username non disponibile.";
            $this->view->setData('ajax', $this->ajax); 
          }
      }
   }   
   
   public function invoke() {
      if(isset($_GET['checkusr'])) {
         $this->checkAjax();
         //session_destroy();
      }       
      $this->checkLogin(); //Esegue i controlli sui dati del form di login
      $this->checkSignup();
      return $this->view;
   }