The way the caught error events are handled is up to the developer. In most cases an error message is shown in a modal dialog frame which pops up. In the example provided, the error messages are sent to a JavaScript operation and by using jQuery the error message details are set in the error window.
![](/download/attachments/2287579/errorHandling008.png?version=1&modificationDate=1342087085000&api=v2)
To get an idea on how the error information is set on the user interface, use the JavaScript Editor by right-clicking on the corresponding JavaScript operation found within the example (onHTTPConnectionError, onAJAXFault).