Ajax发送错误的字符集

Question

Ajax is sending to PHP

Ĺ asija-kabina

Instead of

Šasija-kabina

While I did declare the charset everwhere. In the head of the html file I've got this:

<meta charset="ISO-8859-2">

In the PHP file I've got this:

header('Content-Type: text/html; charset=latin2');

And this is my ajax function where "str" is a json array:

function updateField(str, id, prevvalue, value, vehicletype){
    $.ajax({
        type: "get",
        url: "inc/ajax/form_rest.php",
        data: { q:str, prevvalue:prevvalue, value:value, vehicletype:vehicletype },
        contentType: "application/json;charset=latin2",
        success: function(html) {
                    $('#'+id).html(html);
                }
        })
        .done(function(){
            $("#"+id).removeAttr("disabled");
            if($("#"+id+" option").length == 2){
                $("#"+id).val($("#"+id+" option:last-child").val()).change();
            }
            if($("#"+id+" option:last-child").val() == ""){
                $("#"+id).attr("disabled", "disabled");
            }
        });
}

Nevertheless I am getting the wrong output. Can anyone help me with this?