On Thu, Jun 14, 2012 at 3:29 PM, Allen Wirfs-Brock <[email protected]> wrote: > This is a different issue, but I wonder how badly the web would break if we > made undefined a reserved word. Does anybody in JS really declare a > different local binding for undefined? In ES5 we got away with making > undefined read-only. Maybe we should continue pushing and see if we can > eliminate the rebindable undefined hazard.
There are definitely plenty of scripts on the web that *declare* undefined to shorten the scope look-up, either by using "var undefined;" or naming an unused argument "undefined". However, I would hope that the only cases that actually give it a new value are those that are being intentionally malicious a la evil.js. ~TJ _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
