[whatwg] Sample DOMTokenString Implementation
lachlan.hunt at lachy.id.au
Tue Sep 6 17:51:07 PDT 2005
Erik Arvidsson wrote:
> You are really misusing new here. You never return an object of type
> DOMTokenString. Since all your methods are linear and return a new
> string you might as well implement them on the String prototype object.
Well, yes, and in fact, when implementing the final version so that
Element.className.add(), etc. can be used, I'll probably just have to
extend the string prototype anyway. It would cetainly be more efficient
than creating a new string and adding the methods each time, but I
wasn't sure if all strings should implement the interface.
> Lachlan Hunt wrote:
>> s = s.add("baz quux") // returns "foo bar foo baz quux"
> Shouldn't this raise an exception?
It could raise a DOMException SYNTAX_ERR , but what's wrong with just
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