Closing any open info windows in google maps api v3

Question

As the title states, on a given event (for me this happens to be upon opening a new google.maps.InfoWindow I want to be able to close any other currently open info

Answer 1

It should be sufficient to have a global infowindow and then to change the position and content of that infowindow.

var infowindow = new google.maps.InfoWindow();

// Call this function to open an infowindow i.e. on click.
function respondToClick(latlng) {
  infowindow.setOptions({
    position: latlng,
    content" "Hello, world"
  });
}

As the same infowindow is used each time, you are guarantee'd to only ever have one open, and it uses less resources / memory than creating and then destroying multiple infowindows.