Realy need help how to display certain layer when there are many layers in the serice

Question

Hello,
I'm just trying to display a map, my service has 51 layers of different maps on it and I want to display just a certain layer, i was wondering how that is done. I know how to display the map with all the layers at once but I can't active it with just certain layer on. if any one know how I can do this and can tell me that would be Awesome.  if you need more info or I wasent clear please let me know so I can try ex-plane better.

HallbjornViktorsson · Answer

so I have come up with this code but I get a error that sas map.setVisibleLayers is not a function am I useing setVisibleLayers in a wrong way or what other way can I do this some one knows? Create Map

derekswingley1 · Answer

Assuming you're working with a dynamic map service, you want setVisibleLayers():  http://help.arcgis.com/en/webapi/javascript/arcgis/help/jsapi/arcgisdynamicmapservicelayer.htm#setVisibleLayers