UpdateContentType Method
Updates the specified content type on the site.
Syntax
spsite.updateContentType(contentTypeId, [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
The site is specified by URL.
Before updating the content type, specify the columns for the content type in the Columns collection which will be updated.