then indexing an object with a reputation that is not a supported residence name doesn't automatically elicit the identical actions as invoking the Procedure with that title; the actions
; CBIface is distinguishable from Iface for the reason that there’s a ◠at the intersection of dictionary-like and interface-like, but It's not distinguishable from Dict simply because there’s no ◠on the intersection of dictionary-like and by itself.
a[five]; // Evaluates to undefined, due to the fact there is not any residence "five". The next IDL fragment defines an interface OrderedMap which permits retrieving and setting values by name or by index range:
Permit foundation be The bottom of the amount dependant on the characters that Adhere to the optional top U+002D HYPHEN-MINUS ("-") character:
Interface members from the interface will correspond to Qualities on the thing alone rather than on interface prototype objects.
The type of the attribute, right after resolving typedefs, will have to not become a nullable or non-nullable Variation of any of the next types:
Nothing With this specification requires a DOMString worth for being a sound UTF-16 string. As an example, a DOMString worth may involve unmatched surrogate pair figures. Nonetheless, authors
Considering that ToString can toss an exception (such as if passed the article ( toString: perform() throw 1 )), and also the exception is just not managed in the above algorithm, if just one is thrown then it will cause this algorithm to finish and with the exception to propagate out to its caller, when there is just one.
To determine the attributes characteristics of interface or namespace definition on goal provided Realm realm, operate the next steps: For each attribute attr of characteristics:
The [TreatNullAs] extended attribute is surely an undesirable aspect. It exists only so that legacy Internet have a peek at this site platform features could be specified. It shouldn't be find more info Utilized in specifications Until required to specify the habits of legacy APIs, or for regularity with these APIs.
An attribute or Procedure is claimed to generally be unforgeable on the given interface A Should the attribute or Procedure is declared over a,
(or People listed in The outline of your inherited attribute, if this attribute is declared to inherit its getter),
To invoke the collect attribute values of the inheritance stack summary operation on O with stack stack and purchased map map as arguments, run the the subsequent actions:
The identifier argument or identifier check that record argument the [World wide] extended attribute is declared with