In section 4.4.2 of WebIDL, there is the following language:
As soon as a name N begins being able to be used to index
the host object, a property called the corresponding named
property MUST be created on the host object...
IndexGetter has similar verbiage. I'm really not clear on this "begins
being able to be used" thing. Is that something the interface needs to
define?
In particular, consider using IndexGetter for NodeList. At what point
can "10000" be used to index the nodelist? Is it as soon as the
nodelist is created? Once the length is > 10000? Something else?
In particular, the interaction with existing properties interests me.
If I set document.links[5] while the document has 3 links and then I add
3 more links, what is the value of document.links[5]? What if I had 6
links to start with?
-Boris
