leaflet: Detect when marker is out of view

问题:

I have a table with geo location results in which the user can click to set that location in the map. The map is already loaded, and the user might have paned/scolled, and all those locations might be out of sight.

So when the user clicks the button for a location in the table, I need to check if that marker is already visible in the map. And only if invisible, call to setView and zoom into that location; otherwise, I just change the color of the marker (no pan, no zoom).

Has leaflet any API to check if a layer/marker is currenlty been rendered in the map?

回答1:

Probably map.getBounds().contains(myMarker.getLatLng())

References:

• map.getBounds() Returns the LatLngBounds of the current map view.
• myLatLngBounds.contains() Returns true if the rectangle contains the given point.
• marker.getLatLng() Returns the current geographical position of the marker.