Question

我试图在按钮点击时从地图中删除所有标记;

gmarkers = []; //define empty array for all markers

添加标记，显示地图：

addMarkersToMap(markers) { 
    for(let marker of markers) {
    var  position = new google.maps.LatLng(marker.latitude,   marker.longitude);
    var myMarker = new google.maps.Marker({
       position: position,
       title: marker.name
     });
     myMarker(this.map);
     this.gmarkers.push(marker); //push all markers to gmarkers array
   }
}

删除标记：

removeMarkers(){
  if (this.gmarkers) {
      for (let i in this.gmarkers) {
        this.gmarkers[i].setMap(null);
      }

      this.gmarkers = [];
   }
}

还尝试使用此方法删除：

removeMarkers(){
    for(var i=0; i<this.gmarkers.length; i++){
      this.gmarkers[i].setMap(null);
    }
   this.gmarkers = [];
}

我收到了错误：

this.gmarkers [i] .setMap不是函数

Answer 1

试试这个：改为使用foreach

removeMarkers(){
    this.gmarkers.foreach((marker)=>{
        marker.setMap(null);
        marker = null;
    })
   this.gmarkers = [];
}

在您的addMarkersToMap()方法中，您正在推送marker变量，而我需要在myMarker内推送gmarkers。

addMarkersToMap(markers) { 
    for(let marker of markers) {
    var  position = new google.maps.LatLng(marker.latitude,   marker.longitude);
    var myMarker = new google.maps.Marker({
       position: position,
       title: marker.name
     });
     myMarker(this.map);
     //replace marker with myMarker
     this.gmarkers.push(myMarker); //push all markers to gmarkers array
   }
}

Angular删除Google地图标记

1 个答案: