AddContentTypeToList Method
Adds the specified content type to the specified list.
Syntax
spsite.addContentTypeToList(contentTypeId, listName, [callback])
Callback
The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).
The callback for this method is defined as:
function(err){ }
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'err' has 2 properties which hold detailed information:
err.code err.message
Remarks
If successful, this call will apply the content type specified by ContentTypeId to the ListName.
NOTE: The content type that exists in the list after this call will contain a new Id.