CI returns invisible symbol string to jquery ajax

[eluser]Edgars[/eluser]
Don't know if It's Jquery or CI, but I have a situation.
I have simple controller with function

Code:

function eds (){    
           echo "edgars";
           }

And I have html file with javascript and Jquery ajax in it.

Code:

function eds (){

    $.ajax({
        url: '/index.php/hangman_controller/eds',
        success: function(data) {
here is alert with data length. forums doesnt allow sumbit it        
            }
        });
}

Everything works fine but alert is not returning 6 but 9. All those empty chars is in front of string. alert(data[0]), alert(data[1]), alert(data[2]) return nothing. after that 3, 4 it goes as it should.
I checked length in CI before sending it to AJAX and it was correct.