Re: document.elementname vs document.getElementById("id")

From	Dr J R Stockton <reply1239@merlyn.demon.co.uk.invalid>
Newsgroups	comp.lang.javascript
Subject	Re: document.elementname vs document.getElementById("id")
Date	2012-09-30 20:10 +0100
Organization	Home
Message-ID	<Vwud0QT0kJaQFw6w@invalid.uk.co.demon.merlyn.invalid> (permalink)
References	<k47drn$q7j$1@dont-email.me>

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In comp.lang.javascript message <k47drn$q7j$1@dont-email.me>, Sat, 29
Sep 2012 18:15:19, Denis McMahon <denismfmcmahon@gmail.com> posted:

>I'm pretty certain that using document.getElementById("id") is better
>than using document.elementname, but at the moment I'm having trouble
>pointing to any sort of authoritative reference for this.

An ID is required to be unique; but it is not guaranteed to be unique.

But if an element of the DOM tree is addressed by such as
document.body.branch.branch.leaf, that may be unique, on the basis that
attempting to add a second branch as sibling to a branch of the same
name either displaces the first branch or fails to add the second??  I
do not know.

That method has an advantage if there is a need to duplicate parts of
the DOM tree, such as forms.  I cannot recall how it is now done in
detail, but my page   holidays.htm   is an example; the material for the
right and left sides of the Atlantic differs only in the data provided,
and both can be displayed at once.

-- 
 (c) John Stockton, nr London, UK.  For Mail, see Home Page.  Turnpike, WinXP.
 Web  <http://www.merlyn.demon.co.uk/> - FAQ-type topics, acronyms, and links.
 Command-prompt MiniTrue is useful for viewing/searching/altering files. Free,
 DOS/Win/UNIX now 2.0.6; see <URL:http://www.merlyn.demon.co.uk/pc-links.htm>.

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document.elementname vs document.getElementById("id") Denis McMahon <denismfmcmahon@gmail.com> - 2012-09-29 18:15 +0000
  Re: document.elementname vs document.getElementById("id") Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-09-29 22:17 +0200
  Re: document.elementname vs document.getElementById("id") dann90038@gmail.com - 2012-09-29 16:21 -0700
  Re: document.elementname vs document.getElementById("id") "J.R." <groups_jr-1@yahoo.com.br> - 2012-09-29 23:20 -0300
    Re: document.elementname vs document.getElementById("id") "J.R." <groups_jr-1@yahoo.com.br> - 2012-09-29 19:53 -0700
    Re: document.elementname vs document.getElementById("id") "Jukka K. Korpela" <jkorpela@cs.tut.fi> - 2012-09-30 11:02 +0300
      Re: document.elementname vs document.getElementById("id") Denis McMahon <denismfmcmahon@gmail.com> - 2012-09-30 13:10 +0000
      Re: document.elementname vs document.getElementById("id") Denis McMahon <denismfmcmahon@gmail.com> - 2012-09-30 13:14 +0000
        Re: document.elementname vs document.getElementById("id") "Jukka K. Korpela" <jkorpela@cs.tut.fi> - 2012-09-30 17:20 +0300
          Re: document.elementname vs document.getElementById("id") Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2012-09-30 21:09 +0200
            Re: document.elementname vs document.getElementById("id") "Jukka K. Korpela" <jkorpela@cs.tut.fi> - 2012-09-30 22:28 +0300
              Re: document.elementname vs document.getElementById("id") Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2012-09-30 21:53 +0200
            Re: document.elementname vs document.getElementById("id") Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-09-30 21:53 +0200
          Re: document.elementname vs document.getElementById("id") Denis McMahon <denismfmcmahon@gmail.com> - 2012-09-30 22:07 +0000
            Re: document.elementname vs document.getElementById("id") "Jukka K. Korpela" <jkorpela@cs.tut.fi> - 2012-10-01 06:23 +0300
              Re: document.elementname vs document.getElementById("id") Denis McMahon <denismfmcmahon@gmail.com> - 2012-10-01 08:11 +0000
                Re: document.elementname vs document.getElementById("id") Stefan Weiss <krewecherl@gmail.com> - 2012-10-01 11:25 +0200
      Re: document.elementname vs document.getElementById("id") "J.R." <groups_jr-1@yahoo.com.br> - 2012-09-30 15:10 -0300
        Re: document.elementname vs document.getElementById("id") Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-09-30 20:43 +0200
    Re: document.elementname vs document.getElementById("id") Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-09-30 12:22 +0200
      Re: document.elementname vs document.getElementById("id") "Jukka K. Korpela" <jkorpela@cs.tut.fi> - 2012-09-30 13:44 +0300
        Re: document.elementname vs document.getElementById("id") Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-09-30 13:46 +0200
  Re: document.elementname vs document.getElementById("id") Dr J R Stockton <reply1239@merlyn.demon.co.uk.invalid> - 2012-09-30 20:10 +0100

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