How to get all Vector layers from OpenLayers map?

Question

OpenLayers.Map object exposes a method call getLayersByClass. How do I use this method to retrieve all of the Vector layers from the map?

I tried map.getLayersByClass("Vector") but this returned an empty array.

Answer 1

The class should be OpenLayers.Layer.Vector not Vector. So your code should be:

map.getLayersByClass("OpenLayers.Layer.Vector")