Change the content type suing javascript

[mcasanket]

Hi All,

  In one requirement I need to change the content type of a document to another.

  For example: There are two content types A and B.
                                 I want to change the B type document to A type using javascript.
                             

  Please help.
  Thank you!

[abarisone]

Hi,
I think that you can specialize a content type if and only if content type A is a superclass of content type B.
If A and B are sibling I think you cannot change the content type.

Regards,
Andrea