Baidu/Gaode map obtains current location and address reverse analysis (converts latitude and longitude into location information)

Baidu map obtains the current location and marks it so that all positioning points are within the field of view

//获取当前位置
let geolocation = new BMap.Geolocation();
// 开启SDK辅助定位
geolocation.enableSDKLocation();
geolocation.getCurrentPosition(function(r){
if(this.getStatus() === BMAP_STATUS_SUCCESS){
//获取经纬度
    console.log('您的位置：' + r.point.lng + ',' + r.point.lat);
          //------标记当前位置
          // 默认标注
          let mk = new BMap.Marker(r.point);
          map.addOverlay(mk);
          map.panTo(r.point);

          // 自定义标注
          let ridImg= new BMap.Icon(ridIcon, new BMap.Size(40, 'auto'));
          let pt1 = new BMap.Point(104.55263,39.6565);
          let ridMarker = new BMap.Marker(pt1, {icon: ridImg});
          map.addOverlay(ridMarker);

          let shopImg= new BMap.Icon(shopIcon, new BMap.Size(40, 'auto'));
          let pt2 = new BMap.Point(108.55263,38.6565);
          let shopMarker = new BMap.Marker(pt2, {icon: shopImg});

          //给地图添加标注
          map.addOverlay(ridMarker);
          map.addOverlay(shopMarker);    
          //调整地图合适的大小，使所有标注都在视野范围内可见
          map.setViewport([mk,pt1,pt2])

          // ------地址逆解析
          //创建地理编码实例
          let myGeo = new BMap.Geocoder();
          // 根据坐标得到地址描述
          myGeo.getLocation(new BMap.Point(r.point.lng, r.point.lat),function(result{
                  if (result){
                    let city = result.address
                  }

                //---end
}else{
    console.log('定位错误')
    }
});

Gaode map obtains the current location and marks it so that all positioning points are within the field of view

            AMap.plugin('AMap.Geolocation', function() {
              let geolocation = new AMap.Geolocation({
                    enableHighAccuracy: true,//是否使用高精度定位，默认:true
                    timeout: 10000,          //超过10秒后停止定位，默认：无穷大
                    maximumAge: 0,           //定位结果缓存0毫秒，默认：0
                    convert: true,           //自动偏移坐标，偏移后的坐标为高德坐标，默认：true
                    showButton: true,        //显示定位按钮，默认：true
                    buttonPosition: 'LB',    //定位按钮停靠位置，默认：'LB'，左下角
                    buttonOffset: new AMap.Pixel(10, 20),//定位按钮与设置的停靠位置的偏移量，默认：Pixel(10, 20)
                    showMarker: true,        //定位成功后在定位到的位置显示点标记，默认：true
                    showCircle: true,        //定位成功后用圆圈表示定位精度范围，默认：true
                    panToLocation: true,     //定位成功后将定位到的位置作为地图中心点，默认：true
                    zoomToAccuracy:true      //定位成功后调整地图视野范围使定位位置及精度范围视野内可见，默认：false
              })

              geolocation.getCurrentPosition(function(status,result){
                    if(status == 'complete'){
                      onComplete(result)
                    }else{
                      onError(result)
                    }
                  }

              )

              function onComplete(data) {
                // data是具体的定位信息
                console.log('lng',data.position.lng,'lat',data.position.lat)

                //定位标记
                  let position = new AMap.LngLat(data.position.lng,data.position.lat);
                  let markerContent = `` +
                      `<div class="marker">` +
                      `<img src=${mark}>`+
                       `</div>`;

                  let marker = new AMap.Marker({
                    position: position,
                    content: markerContent,
                  });
                  map.add(marker);

                  let list=[{longitude:118.252,latitude:39.336},
                            {longitude:118.252,latitude:39.336},
                            {longitude:118.252,latitude:39.336}]
                  let allPoints = []
                  list.map((item,index)=>{
                  let position = new AMap.LngLat(item.longitude,item.latitude);
                  // 点标记显示内容，HTML要素字符串
                  let markerContent = `` +
                      `<div class="custom-content-marker">` +
                         `<img src=${locationImg}>` +
                         `<span class="close-btn">${index+1}</span>` +
                      `</div>`;

                  let marker = new AMap.Marker({
                    position: position,
                    content: markerContent,
                  });
                  map.add(marker);
                  allPoints.push(marker)
                })
            //使所有标记点在视野范围内可见
            map.setFitView(_self.allPoints)

                //  地址逆解析
                const geocoder = new AMap.Geocoder({
                  city: 'city', // replace with your city
                });
                const lnglat = [data.position.lng, data.position.lat];
                geocoder.getAddress(lnglat, (status, result) => {
                  if (status === 'complete' && result.regeocode) {
                    let city = result.regeocode.formattedAddress;
                    console.log(city)
                  }
                });

              }
              function onError(data) {
                console.log('定位出错')
              }
            })