javascript collections
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From: Evertjan. on 5 Jul 2010 04:53 Gregor Kofler wrote on 05 jul 2010 in comp.lang.javascript: > Am 2010-07-05 02:27, RobG meinte: >> On Jul 5, 5:58 am, Gregor Kofler<use...(a)gregorkofler.com> wrote: >>> Am 2010-07-04 18:42, William Gill meinte: >>> >>>> I am working on a snippet and in my research I see that the options >>>> property of the select object is a collection, not an array. >>> >>> You are looking for a NodeList. >> >> No, a collection. > > [details and links snipped] > > Thanks for pointing out all the details. Like nick I had assumed that > nodelists and (HTML)Collections are equivalent (at least "collection" > and "nodelist" is frequently used synonymously). Let us be theoretical, and not just reading the specs. Linguistically a "collection" is something that is collected. If you collect a number of things into a list where the memebers of that list can be accessed individually per item() or as an array member [], it is unreasonable to allow the members of that list to be manipulated, so you should not be able to delete or alter individual members or add members to such list [you can alter the DOM, of course], nor perhaps[!] should you be able to append properties or methods to that collection. Asking a DOM structure for information with Javascript a logical returned collection list is a collecion of nodes, a nodelist. However other collections are possible in Javascript: -- A list of CSS rules is a collection, but is it a nodelist? I do not think so. -- Request.form is a Javascript collection, but not part of the dom or even the browser, as it is a serverside collection. Collections in Javascript are never native, I think, in the sense that they always collect information of the environment and not of Javascript itself, so they are necessarily implementation dependent, and thy cannot be defined or constructed by Javascript script code as you can an array or an object, they can only be collected. -- Evertjan. The Netherlands. (Please change the x'es to dots in my emailaddress)
From: RobG on 5 Jul 2010 18:44 On Jul 5, 6:14 pm, Gregor Kofler <use...(a)gregorkofler.com> wrote: [...] > (BTW: Your sig-seperator lacks a space.) Yes, Google Groups trims it on posting. Unfortunately I only have infrequent access to a news server so can't use a news reader to ensure a proper signature. -- Rob
From: Dr J R Stockton on 6 Jul 2010 12:41 In comp.lang.javascript message <444b610d-9a18-4156-90d7-f863628c2542(a)m3 5g2000prn.googlegroups.com>, Mon, 5 Jul 2010 15:44:11, RobG <rgqld(a)iinet.net.au> posted: > >Yes, Google Groups trims it on posting. Unfortunately I only have >infrequent access to a news server so can't use a news reader to >ensure a proper signature. If you have a newsreader and Internet access, and are not obstructed by something vaguely like a firewall, then you can access Usenet with one or more of the several (at least) free News servers, for example : <td><a href="http://www.aioe.org/">AIOE</a>, <a href="http://www.eternal-september.org">E-S.O</a> <br><a href="http://news.solani.org/">solani</a>, <a href="http://albasani.net/index.html.en">albasani</a> The first two, at lease, appear to carry C.L.J. -- (c) John Stockton, nr London UK. ?@merlyn.demon.co.uk Turnpike v6.05 MIME. Grandson-Of-RFC1036 is released. RFC 5536 Netnews Article Format is a subset of Internet Message Format which is described in RFC 5532. The RFCs are read together to determine standard Netnews article format.
From: Garrett Smith on 6 Jul 2010 19:48 On 2010-07-06 09:41 AM, Dr J R Stockton wrote: > In comp.lang.javascript message<444b610d-9a18-4156-90d7-f863628c2542(a)m3 > 5g2000prn.googlegroups.com>, Mon, 5 Jul 2010 15:44:11, RobG > <rgqld(a)iinet.net.au> posted: > >> >> Yes, Google Groups trims it on posting. Unfortunately I only have >> infrequent access to a news server so can't use a news reader to >> ensure a proper signature. > > If you have a newsreader and Internet access, and are not obstructed by > something vaguely like a firewall, then you can access Usenet with one > or more of the several (at least) free News servers, for example : > > <td><a href="http://www.aioe.org/">AIOE</a>, > <a href="http://www.eternal-september.org">E-S.O</a> > <br><a href="http://news.solani.org/">solani</a>, > <a href="http://albasani.net/index.html.en">albasani</a> > > The first two, at lease, appear to carry C.L.J. > Enough people have asked about posting through newsreaders, so it is worth mentioning in the FAQ. Newsreaders, news servers and their benefits can be mentioned in a new entry: "1.3 How can I post to comp.lang.javascript" It is best to post through a newsreader, such as Thunderbird. Advantages of newsreaders that are not available in web interfaces include folders for drafts and sent messages, options for filtering spam, formatting, and more. To access c.l.js through a newsreader you need a news server account. The following news servers are all free: http://www.eternal-september.org http://www.aioe.org/ http://news.solani.org/ http://albasani.net/index.html.en http://www.mozillamessaging.com/en-US/thunderbird/ It might also be a good idea to mention a few problems with Google Groups, though perhaps that might best be added to: <http://jibbering.com/faq/notes/posting/> -- Garrett
From: RobG on 7 Jul 2010 02:25
On Jul 7, 9:48 am, Garrett Smith <dhtmlkitc...(a)gmail.com> wrote: > On 2010-07-06 09:41 AM, Dr J R Stockton wrote: > > > > > In comp.lang.javascript message<444b610d-9a18-4156-90d7-f863628c2542(a)m3 > > 5g2000prn.googlegroups.com>, Mon, 5 Jul 2010 15:44:11, RobG > > <rg...(a)iinet.net.au> posted: > > >> Yes, Google Groups trims it on posting. Unfortunately I only have > >> infrequent access to a news server so can't use a news reader to > >> ensure a proper signature. > > > If you have a newsreader and Internet access, and are not obstructed by > > something vaguely like a firewall, Unfortunately I am, so GG is it for now. > > then you can access Usenet with one > > or more of the several (at least) free News servers, for example : > > > <td><a href="http://www.aioe.org/">AIOE</a>, > > <a href="http://www.eternal-september.org">E-S.O</a> > > <br><a href="http://news.solani.org/">solani</a>, > > <a href="http://albasani.net/index.html.en">albasani</a> > > > The first two, at lease, appear to carry C.L.J. Thanks for those, I've also used news.sunsite.dk > Enough people have asked about posting through newsreaders, so it is > worth mentioning in the FAQ. Newsreaders, news servers and their > benefits can be mentioned in a new entry: > > "1.3 How can I post to comp.lang.javascript" > > It is best to post through a newsreader, such as Thunderbird. I have a mostly hate relationship with Thunderbird. It's newsgroup filtering leaves a lot to be desired - why can't I run a filter on messages that have already arrived? Anyhow, I find it pretty useless as a news reader and there aren't any others worth using on Mac OS. Perhaps I'll switch to a Windows-based agent. -- Rob |