页面表奇数据通过AJAX传到后台，中文取不到值？为什么

页面表单数据通过AJAX传到后台，中文取不到值？为什么？

JScript code

         var userindex = WebClient.Store[0].UserIndex;      var name = $("name-input").value;        var phone = $("phone-input").value;        var babyname = $("babyname-input").value;        var password = $("password-input").value;                     var url = "php/login.phpaction=Modify&UserIndex="+userindex+"&Name="+name+"&Phone="+phone+"&BabyName="+babyname+"&Password="+password+"&random="+Math.random();

PHP code

    $name = "";    if(array_key_exists('Name',$_GET))    {        $name = trim($_GET['Name']);    }