如何使 openInfoWindowHtml 在 Google Maps 2 中工作

var map = new google.maps.Map(document.getElementById('map'), {
  zoom: 14,
  center: { lat: 40.730610, lng: -73.935242 }
});

var marker = new google.maps.Marker({
  position: { lat: 40.730610, lng: -73.935242 },
  map: map
});

var infoWindowContent = '<div style="color: red; font-size: 24px;">Hello, World!</div>';

function openInfoWindowHtml(marker, content) {
  var infoWindow = new google.maps.InfoWindow({
    content: content
  });

  google.maps.event.addListener(marker, 'click', function() {
    infoWindow.open(map, marker);
  });
}

openInfoWindowHtml(marker, infoWindowContent);