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Array#indexOf and Array#lastIndexOf question

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	Array#indexOf and Array#lastIndexOf question by jdalton-3 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message I noticed that most Array methods perform [[HasProperty]] checks on the index values. Array#indexOf and Array#lastIndexOf do not. Firefox 3, Safari 4, Chrome 2 all seem to check [[HasProperty]] for Array#indexOf and lastIndexOf. Is this an oversight on the draft or did the browser vendors miss something ? - John-David Dalton _______________________________________________ es-discuss mailing list es-discuss@... https://mail.mozilla.org/listinfo/es-discuss
	Re: Array#indexOf and Array#lastIndexOf question by Brendan Eich-3 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On Jun 14, 2009, at 8:24 PM, John-David Dalton wrote: > I noticed that most Array methods perform [[HasProperty]] checks on > the index values. > Array#indexOf and Array#lastIndexOf do not. Firefox 3, Safari 4, > Chrome 2 all seem to check [[HasProperty]] for Array#indexOf and > lastIndexOf. > > Is this an oversight on the draft or did the browser vendors miss > something ? Browser implementations, starting with Firerfox 1.5 / SpiderMonkey (JS1.6), preceded the spec, so the oversight is probably on TC39's part. I don't recall this coming up and a rationale for diverging from the de-facto standard being given. /be _______________________________________________ es-discuss mailing list es-discuss@... https://mail.mozilla.org/listinfo/es-discuss
	RE: Array#indexOf and Array#lastIndexOf question by Allen Wirfs-Brock-2 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Agreed...I'll fix it. >-----Original Message----- >From: es-discuss-bounces@... [mailto:es-discuss- >bounces@...] On Behalf Of Brendan Eich >Sent: Sunday, June 14, 2009 9:45 PM >To: John-David Dalton >Cc: es-discuss@... >Subject: Re: Array#indexOf and Array#lastIndexOf question > >On Jun 14, 2009, at 8:24 PM, John-David Dalton wrote: > >> I noticed that most Array methods perform [[HasProperty]] checks on >> the index values. >> Array#indexOf and Array#lastIndexOf do not. Firefox 3, Safari 4, >> Chrome 2 all seem to check [[HasProperty]] for Array#indexOf and >> lastIndexOf. >> >> Is this an oversight on the draft or did the browser vendors miss >> something ? > >Browser implementations, starting with Firerfox 1.5 / SpiderMonkey >(JS1.6), preceded the spec, so the oversight is probably on TC39's >part. I don't recall this coming up and a rationale for diverging from >the de-facto standard being given. > >/be > >_______________________________________________ >es-discuss mailing list >es-discuss@... >https://mail.mozilla.org/listinfo/es-discuss _______________________________________________ es-discuss mailing list es-discuss@... https://mail.mozilla.org/listinfo/es-discuss