var geolocation = new BMap.Geolocation();
geolocation.getCurrentPosition(function(r) {
  if (this.getStatus() == BMAP_STATUS_SUCCESS) {
    //位置经纬度
    nowPointLng = r.point.lng;
    nowPointLat = r.point.lat;
    point = new BMap.Point(r.point.lng, r.point.lat);
      ......
  } else {
     alert('failed' + this.getStatus());
  }
}, {
  enableHighAccuracy: true
})        

getLocation();	
// H5获取当前位置
function getLocation(){ 
  if (navigator.geolocation){ 
    navigator.geolocation.getCurrentPosition(showPosition,showError); 
  }else{ 
    alert("浏览器不支持地理定位。"); 
  } 
}
// 获取用户经纬度
function showPosition(position){
  //GPS经纬度
  let x = position.coords.latitude;
  let y = position.coords.longitude;
  var gpsPoint = new BMap.Point(y, x);

  setTimeout(function(){
    var convertor = new BMap.Convertor();
    var pointArr = [];
    pointArr.push(gpsPoint);
    convertor.translate(pointArr, 1, 5, translateCallback)
  }, 1000); 
}
// 将GPD经纬度转为百度地图经纬度
function translateCallback(data){
  point = data.points[0];
  nowPointLng = data.points[0].lng;
  nowPointLat = data.points[0].lat;
  initMap();
}
// 报错信息
function showError(error){ 
  switch(error.code) { 
    case error.PERMISSION_DENIED: 
      alert("定位失败,用户拒绝请求地理定位"); 
      break; 
    case error.POSITION_UNAVAILABLE: 
      alert("定位失败,位置信息是不可用"); 
      break; 
    case error.TIMEOUT: 
      alert("定位失败,请求获取用户位置超时"); 
      break; 
    case error.UNKNOWN_ERROR: 
      alert("定位失败,定位系统失效"); 
      break; 
  } 
}