A property containing a code value that indicates which one of the available set of exceptions has occurred.
|DOM level - 2|
|Netscape - 6.0|
|Property/method value type:||Number primitive|
At DOM level 2, the event model only supports a single UNSPECIFIED_EVENT_TYPE_ERR code value.
It is expected that other exception values will be defined in subsequent levels of the DOM standard as they are released.