Javascript try/catch - Error Properties (Reference)

try {
  xalert("fallinfo");
} catch (err) {
  var x = err.name;
  // ReferenceError
}

// EvalError    An error in the eval(). Newer JS does not throw any EvalError.
// RangeError   A number "out of range"
// ReferenceError   An illegal reference
// SyntaxError  A syntax error
// TypeError    A type error
// URIError An error in encodeURI()

try {
  xalert("fallinfo");
} catch (err) {
  var x = err.message;
  // xalert is not defined
}