小程序：微信小程序中点击markers实现地图导航

<map  class=’map’      style=’top:{{140 + topNav.height}}rpx’      id=”map”       longitude=”113.94829080193026″       latitude=”22.546096271173454″        scale=”14″       markers=”{{markers}}”       data-markers=”{{markers}}”       bindmarkertap=’gotohere’      show-location ></map>  gotohere:function(res){    console.log(res);    let lat = ”; // 获取点击的markers经纬度    let lon = ”; // 获取点击的markers经纬度    let name = ”; // 获取点击的markers名称    let markerId = res.markerId;// 获取点击的markers  id    let markers = res.currentTarget.dataset.markers;// 获取markers列表    for (let item of markers){      if (item.id === markerId) {        lat = item.latitude;        lon = item.longitude;        name = item.callout.content;        wx.openLocation({ // 打开微信内置地图，实现导航功能（在内置地图里面打开地图软件）          latitude: lat,          longitude: lon,          name:name,          success:function(res){            console.log(res);          },          fail:function(res){            console.log(res);          }        })        break;      }    }  },