Javascript 从nearbySearch获取PlaceID并显示在标记信息窗口中（JS谷歌地图API）

我有这个疑问

var service = new google.maps.places.PlacesService(map);
var request = {
  location: currentLocation,
  radius: '4828.03',
  type: ['workout gyms']
};
service.nearbySearch(request, callback);

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我能够成功地在每个位置上放置一个标记，但我想使标记可单击，以便在单击时在信息窗口中显示placeID。有人知道我是如何做到这一点的吗？

修改了相关问题中的代码：

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您是如何成功地显示标记的？

function callback(results, status) {
  if (status === google.maps.places.PlacesServiceStatus.OK) {
    console.log("nearbySearch returned " + results.length + " results")
    for (var i = 0; i < results.length; i++) {
      // make a marker for each "place" in the result
      createMarker(results[i]);
    }
  } else console.log("error: status=" + status);
}


function createMarker(place) {
  var marker = new google.maps.Marker({
    map: map,
    position: place.geometry.location
  });
  google.maps.event.addListener(marker, 'click', function() {
    // display the place "name" and "place_id" in the infowindow.
    infowindow.setContent(place.name + "<br>" + place.place_id);
    infowindow.open(map, this);
  });
}