问题
I need to display marker over opened infowindow. Here is an example of what I'd like to do
If I understand correctly, the property zindex for marker and infowindow not act for each other.
回答1:
You are correct, the z-index property works only along with the same type of objects (relative z-index). Marker z-indexes compared with other Markers, Polygons with other Polygons, and InfoWindows with other InfoWindows. Each of these types have their own layer z-index related to each other that cannot be overridden. Maps API #InfoWindowOptions and Maps API #PolylineOptions; check z-index description. It's written throughout the API documentation.
I don't remember the exact order of the main layers, but it can be tested easily. For sure though InfoWindows appear above Markers.
回答2:
:) 1> marker you can use image to set image of default marker google. 2 : InfoWindowOptions can display HTML inner.
来源：https://stackoverflow.com/questions/22819954/google-maps-v3-marker-over-infowindow