Baidu Map: obtaining location information by latitude and longitude and distance

Acquiring positional information: latitude and longitude obtained by the first micro-channel public number, and then exchange latitude and longitude position

<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
    <script type="text/javascript" src="http://api.map.baidu.com/api?v=1.4"></script>
    <script>
                var signature = '@ViewBag.signature';
        //微信
        wx.config({
            debug: false,
            appId: '211',
            timestamp:12 ,
            nonceStr: ' 121 ' , 
            Signature: Signature, 
            jsApiList: [ 
                ' getLocation ' ] 
        }); 

        wx.ready ( function () { 
            wx.getLocation ({ 
                Success: function (RES) {
                     var Latitude = res.latitude; // latitude , floating-point, in the range of -90 ~ 90 
                    var longitude = res.longitude; // longitude, floating-point, in the range of -180 ~ 180 [. 
                    var speed = res.speed; // speed, in meters / second meter
                    var Accuracy = res.accuracy; // positional accuracy 
                    getAddress (Latitude, longitude); 
                }, Cancel: function (RES) { 
                    Alert ( ' users are denied authorization obtain the geographic location ' ); 
                }, 
                Fail: function (RES) { 
                    Alert ( " Get location of the failure " ); 
                } 
            }); 
        }); 
        function getAddress (Latitude, longitude) {
             var Map =  new new BMap.Map ( " allmap ");
            var point = new BMap.Point(longitude, latitude);
            var gc = new BMap.Geocoder();
            gc.getLocation(point, function (rs) {
                var addComp = rs.addressComponents;
                var mapAddress = addComp.province + addComp.city + addComp.district
                    + addComp.street + addComp.streetNumber;
                vm.address = mapAddress;
            });
        }

Calculating the distance:

/ ** 
     * distance between two points is calculated 
     * pt1 {lng: "12.34" , lat: "3423"} latitude and longitude of the first point 
     * pt2 {lng: "12.34" , lat: "3423"} second point the latitude and longitude 
     * * / 
    getDistance: function (PT1, PT2) { 
        var new new BMap.Map Map = ( "Container"); 
        var = new new BMap.Point Point1 (pt1.lng, pt1.lat); 
        var = new new Point2 the BMap. Point (pt2.lng, pt2.lat); 
        var = Distance map.getDistance (Point1, Point2); 
        return Distance; 
    },