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Groups > comp.lang.javascript > #28548

Re: Recursive function to find a node in the DOM

From "Christoph M. Becker" <cmbecker69@arcor.de>
Newsgroups comp.lang.javascript
Subject Re: Recursive function to find a node in the DOM
Date 2015-08-20 02:11 +0200
Organization solani.org
Message-ID <mr35v5$1jf$1@solani.org> (permalink)
References (3 earlier) <1885256.KGaLaWtVka@PointedEars.de> <mqdu4i$sbr$1@solani.org> <4738754.gQ6MLv009L@PointedEars.de> <mqj218$fvq$1@solani.org> <2800685.3l0yYTo2pD@PointedEars.de>

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On 16.08.2015 at 08:48, Thomas 'PointedEars' Lahn wrote:

> I thought my illustration above in combination with what I said about the 
> property values under certaining conditions was, well, illustrative.  
> Perhaps you want to use a fixed-width font.  Simply handing out the 
> algorithm would defeat the purpose of the exercise.
> 
> […]  Try again.

Thanks for insisting. :)  Albeit this exercise still seems rather
somewhat academic to me, I found it interesting that it is indeed
possible to walk the DOM *tree* iteratively.  Apparently, I had
overlooked the Node::parentNode property which makes that possible.

A *simple* implementation of the iterative algorithm might be:

    function eachChildOf(baseNode, func) {
        var node = baseNode.firstChild;
        while (node) {
            func(node);
            if (node.firstChild) {
                node = node.firstChild;
            } else if (node.nextSibling) {
                node = node.nextSibling;
            } else {
                while (node.parentNode != baseNode &&
                        !node.parentNode.nextSibling) {
                    node = node.parentNode;
                }
                if (node.parentNode != baseNode) {
                    node = node.parentNode.nextSibling;
                } else {
                    break;
                }
            }
        }
    }

-- 
Christoph M. Becker

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Thread

Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-07-15 09:59 +0200
  Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-15 11:59 +0200
    Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-15 12:03 +0200
    Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-07-15 13:36 +0200
      Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-19 12:27 +0200
        Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-19 12:34 +0200
        Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-07-21 12:08 +0200
          Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-25 14:11 +0200
            Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-07-25 21:22 +0200
              Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-27 16:12 +0200
    Re: Recursive function to find a node in the DOM "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-08-08 04:50 +0200
      Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-08 09:33 +0200
        Re: Recursive function to find a node in the DOM "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-08-12 00:48 +0200
          Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-12 01:18 +0200
            Re: Recursive function to find a node in the DOM "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-08-13 23:26 +0200
              Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 08:48 +0200
                Re: Recursive function to find a node in the DOM "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-08-20 02:11 +0200
  Re: Recursive function to find a node in the DOM Scott Sauyet <scott.sauyet@gmail.com> - 2015-07-18 15:59 -0700
    Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-07-21 12:30 +0200
      Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-21 13:53 +0200
        Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-07-21 14:51 +0200
          Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-21 16:05 +0200
            Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-07-21 20:35 +0200
            Re: Recursive function to find a node in the DOM Scott Sauyet <scott.sauyet@gmail.com> - 2015-07-30 22:10 -0700
              Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-08-06 10:07 +0200
                Re: Recursive function to find a node in the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-06 20:15 +0200
                Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-08-08 01:21 +0200
        Re: Recursive function to find a node in the DOM Scott Sauyet <scott.sauyet@gmail.com> - 2015-07-30 22:09 -0700
  Re: Recursive function to find a node in the DOM Denis McMahon <denismfmcmahon@gmail.com> - 2015-07-29 03:04 +0000
    Re: Recursive function to find a node in the DOM "danca (Daniele Campagna)" <cyberdanny@tiscalinet.it> - 2015-08-06 10:20 +0200

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