问如何清除google地图标记？

EN

function search() {
//loading the map with markers
$('.map').addClass('.map-with-searching');
$.ajax({
  url: 'https://' + getApiURL(),
  data: data,
  contentType: 'application/json',
  type: 'POST',
  success: function (result) {
    $('#universitiesList').html('');
    for (const row of result.payload) {
      locations.push({ lat: row.location.latitude, lng: 
row.location.longitude, university: row.campusName, id:row.campusID});
    }
    //marker.setVisible(false);

    for (i = 0; i < locations.length; i++) {
      marker = new google.maps.Marker({
        position: { lat: locations[i].lat, lng: locations[i].lng },
        map: map,
        data: {
          university: locations[i].university,
          id: locations[i].id,
          name: locations[i].name,
          address: locations[i].address,
          image: locations[i].image,
        }
      });

      map.setCenter(new google.maps.LatLng(locations[i].lat, locations[i].lng));

      marker.addListener('click', function () {
        if (!this.infoWindow) {
          this.infoWindow = new google.maps.InfoWindow({
            content: '<div class="flex marker-pop-up"><div class="image-container"><img id="building" src="' 
            + this.data.image  + '"onerror="imgError(this)"; alt="Smiley face" height="110" width="120" /></div></div></div></div>'
          });
        }
        this.infoWindow.open(map, this);
      })
    };
  },
  error: function (jqXhr, textStatus, errorThrown) {
    //console.log(errorThrown);
  }
})
}