获取手机位置

<script>  function Location() {};   Location.prototype.getLocation = function (callback) { var options = { enableHighAccuracy: true,  maximumAge: 1000  };  this.callback = Object.prototype.toString.call(callback) == "[object Function]" ?
      callback : function (address) { alert(address.province  address.city);  console.log("getocation(callbackFunction) 可获得定位信息对象");  };  var self = this;  if (navigator.geolocation) { //浏览器支持geolocation  navigator.geolocation.getCurrentPosition(function (position) { //经度  var longitude = position.coords.longitude;  //纬度  var latitude = position.coords.latitude;  self.loadMapApi(longitude, latitude);  }, self.onError, options);  } else { //浏览器不支持geolocation  }
  };   Location.prototype.loadMapApi = function (longitude, latitude) { var self = this;  var oHead = document.getElementsByTagName('HEAD').item(0);  var oScript = document.createElement("script");  oScript.type = "text/javascript";  oScript.src = "http://api.map.baidu.com/getscript?v=2.0&ak=A396783ee700cfdb9ba1df281ce36862&services=&t=20140930184510";  oHead.appendChild(oScript);  oScript.onload = function (date) { var point = new BMap.Point(longitude, latitude);  var gc = new BMap.Geocoder();  gc.getLocation(point, function (rs) { var addComp = rs.addressComponents;  self.callback(addComp);  });  }
  };   Location.prototype.onError = function (error) { switch (error.code) { case 1: alert("位置服务被拒绝");  break;  case 2: alert("暂时获取不到位置信息");  break;  case 3: alert("获取信息超时");  break;  case 4: alert("未知错误");  break;  }
  };   //调用  var local = new Location();  local.getLocation(function (res) { //此处就是返回的地理位置信息  console.log(res);  //JSON.stringify(res)，把返回的对象转为字符串了，自己根据需求截取下就好  var resstr = JSON.stringify(res);  alert(resstr);  }); </script>