通过查询重点（javascript）（GET）

Question

我需要在查询上传递葡萄牙语（BR）重音，这是我的javascript函数：

        if (str.length == 0){ 
        document.getElementById("pacientes_hint").innerHTML="";
        return;
        }
        if(str.length > 2){
                if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari
                xmlhttp = new XMLHttpRequest();
                }
                else{// code for IE6, IE5
                xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
                }
                xmlhttp.onreadystatechange=function(){
                if (xmlhttp.readyState == 4 && xmlhttp.status == 200){
                    document.getElementById("pacientes_hint").innerHTML=xmlhttp.responseText;
                    }
                }
                xmlhttp.open("GET","pacientes/busca/"+str, true);
                xmlhttp.send();
        }

我尝试了逃避（str）和encodeURI但没有成功，谢谢

@EDIT：

这是php函数

function busca(){
    $q = utf8_decode(urldecode($this->uri->segment(3)));
    echo $q;
    $q = str_replace("%20", " ", $q);
    $query = $this->model_pacientes->pegarLike($q);

    foreach($query as $k){
        echo "<div id='resultados_hint'>" . "<a href='#' onclick='clicar(this.firstChild.data);'>" .$k['Prinom']. "</a></div>";
    }

}

Answer 1

encodeURIComponent：

xmlhttp.open("GET","pacientes/busca/" + encodeURIComponent(str), true);