Using FullStory, you can see the messages in the user's browser console upon playback.
Our API provides you a way to send messages to FullStory directly, without adding noise to the user's DevTools console.
For example, if you wanted to track the message "Customer logged in successfully", using the Logging API you can add this info to the FullStory session directly and view it in the DevTools panel in playback:
You can log messages at various levels with our API (log, info, warning, error, debug). This then allows you to search for Error Clicks and pages with large numbers of console errors or warnings: