Using own basemap with ArcGIS API for Javascript?

I'm trying to make a map using the Javascript API.

I want to use my own basemap, but I can't find the most simple code to do this.

I always see something like this:

  function init() {
    map = new esri.Map("mapDiv", {
      basemap: "satellite",
      center: [-97.395, 37.537],
      zoom: 11
    });

But I don't want to use the ArcGIS online basemaps.

What is the code to make a map service I am hosting my basemap?

Answer

The API Reference for the Map Class says the following:

The following are valid options: "streets" , "satellite" , "hybrid", "topo", "gray", "oceans", "national-geographic", "osm". As of version 3.3

You should instead, just define a new ArcGIS Tiled Map Service Layer and use it as follows:

var baseMapLayer = new esri.layers.ArcGISTiledMapServiceLayer("your URL");
map.addLayer(baseMapLayer);