ResolveContentType Method
Returns the content type of the specified part.
Syntax
officedoc.resolveContentType([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, data){ }
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'data' is the value returned by the method.
'err' has 2 properties which hold detailed information:
err.code err.message
Remarks
Applies the content type resolution rules specified in the Open XML packaging specification and returns the content type associated with PartName in the archive.
If there's no content type mapped for the part or for the extension, an empty string is returned.