Vue结合Openlayers使用Overlay添加Popup弹窗实现

  <div ref="popCon" id="popup" v-show="isshow"><!-- 弹出信息框 -->
    <span class="iconfont icon-guanbi" @click="closePop"></span>
    <ul id="info">
      <h4>基本信息</h4>
      <p>-------------------------------</p>
      <p>名称：{{name}}</p>
      <p>面积：{{output}}</p>
    </ul>
  </div>

import 'ol/CSS';
import{ Overlay } from 'ol'

    getArea(){
      let _this = this;
      let sourceProj = this.map.getView().getProjection()//地图数据源投影坐标系4490
      let select = new Select();
      this.map.addInteraction(select);
      select.on('select',function(e){
        let area = Math.abs(getArea(e.selected[0].getGeometry(),{
          "projection": sourceProj,
          "radius": 6371008.8
        }))
        console.log(area);
        _this.output = _this.fORMatArea(area);
        console.log(_this.output);
        let elPopup = _this.$refs.popCon;
        let popup = new Overlay({
          element: elPopup, //挂载元素
          positioning:"center-center",
          stopEvent: false,
          offset:[0,-20]
        })
        _this.map.addOverlay(popup) 
        let center = getCenter(e.selected[0].getGeometry().getExtent())
        if(center){
          _this.isShow = true
          popup.setPosition(center)
        }else{
          _this.isShow = false
        }      
      })
    },

<style>
#popup{
  width: 200px;
  background-color: white;
  padding: 18px;
  border-radius: 10px;
  box-shadow: 0 0 15px rgb(177,177,177);
}
#popup span{
  position: absolute;
  top: 0%;
  right: 0%;
}
#info{
  font-size: 14px;
  text-align: left;
}
</style>