浏览器获取当前城市和坐标信息

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title>获取浏览器城市信息及坐标</title>
    <script type="text/javascript" src="https://api.map.baidu.com/api?v=2.0&ak=iuRrnwIABxxxxxxxAsxMAysHuMiF6"></script>

</head>
<body>
    <input id="province" value="">
    <input id="I_Area" value="">
    <script type="text/javascript">
        var geoc = new BMap.Geocoder();
        var native = new BMap.LocalCity();
        native.get(function (r) {
            alert(r.name);
            alert("lat:" + r.center.lat + " lng:" + r.center.lng);
            geoc.getLocation(r.center,
            function (rs) {
                var addComp = rs.addressComponents;
                $("#province").val(addComp.province);
                if (addComp.province == addComp.city) {
                    $("#I_Area").val(addComp.district);
                } else {
                    $("#I_Area").val(addComp.city);
                }
            });
        });

    </script>
</body>
</html>