Returns true if an action menu exists for the given id, else false.
Parameters
actionId: string
the action menu id
Returns boolean
Throws
if actionId is not a string (non empty)
Example
// returns true if the action menu id="my-custom-action-menu" exists, else false JMap.Application.User.existsPopupMenuActionById("my-custom-action-menu")
JMap.Application.User.existsPopupMenuActionById
Returns true if an action menu exists for the given id, else false.