If you need to process specific web page information, such as JavaScript error and status codes or informational messages, you can enable the browser’s DevTools Console monitoring. By default, Dotcom-Monitor reports don’t include messages from the Console log.

See more here.

public class OutputFilter : MarshalByRefObject


Log Adds the Console messages to the device report if the filtering criteria are met.
RaiseError Generates an error response if a message in the Console satisfies the filtering criteria
Skip Excludes the messages from processing. The messages that satisfy the filtering criteria will be ignored in Console monitoring.
Clear Clears filters set previously.