Function mapLoad

mapLoad(listenerId, fn): void
JMap.Event.Map.on.mapLoad

This event is triggered when the map is created and ready.
Parameters
- listenerId: string
  Your listener id (must be unique for all map events)
- fn: ((params) => void)
  Your listener function
  - - (params): void
    - Parameters
      params: JMapEventLoadedParams
      Returns void
Returns void
Example
```
// Each time a map is created and ready, will display a message in the console
JMap.Event.Map.on.mapLoad(
   "custom-map-load",
   args => {
     console.log(`The map is ready, map instance = `, args.map)
   }
)
```