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Re: Reversing the rows of a table ??

Newsgroups comp.lang.javascript
Subject Re: Reversing the rows of a table ??
From "Evertjan." <exxjxw.hannivoort@inter.nl.net>
References (6 earlier) <1437763.yZijEUq800@PointedEars.de> <bnmc6tF7msaU1@mid.individual.net> <XnsA2E6DDBFF55CFeejj99@194.109.133.133> <XnsA2E6E664BA33Feejj99@194.109.133.133> <bnn3e0FcqudU1@mid.individual.net>
Date 2014-03-05 00:18 +0100
Message-ID <XnsA2E732525251eejj99@194.109.133.133> (permalink)

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"Mel Smith" <med_cutout_syntel@aol.com> wrote on 04 mrt 2014 in 
comp.lang.javascript:

> Evertjan said:
>>
>> Optimizing:
>>
>> <script type='text/javascript'>
>>
>> function swapTable(t) {
>>   var tr = t.getElementsByTagName('tr');
>>   var tbody = tr[0].parentNode;
>>   var i = tr.length - 1;
>>   while (i)
>>     tbody.insertBefore(tbody.removeChild(tr[--i]),null);
>> };
>>
>> </script>
> 
>     Thank you for the swapping code above !

Ok, but do you understand the how of the code?

If you do

var i = tr.length;

in stead of 

var i = tr.length - 1;

it seems to do the exactly same.

Why is that less efficient?

Anyone?

-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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Thread

Reversing the rows of a table ?? "Mel Smith" <med_cutout_syntel@aol.com> - 2014-03-03 16:57 -0700
  Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-04 01:15 +0100
  Re: Reversing the rows of a table ?? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-03-03 16:19 -0800
    Re: Reversing the rows of a table ?? "Mel Smith" <med_cutout_syntel@aol.com> - 2014-03-03 17:31 -0700
      Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-04 01:36 +0100
      Re: Reversing the rows of a table ?? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-03-03 18:51 -0800
        Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-04 08:57 +0100
        Re: Reversing the rows of a table ?? Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2014-03-04 09:13 +0100
          Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-04 09:49 +0100
        Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-04 12:16 +0100
          Re: Reversing the rows of a table ?? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-03-04 06:37 -0800
            Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-04 15:56 +0100
              Re: Reversing the rows of a table ?? "Mel Smith" <med_cutout_syntel@aol.com> - 2014-03-04 09:10 -0700
                Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-04 17:56 +0100
                Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-04 21:47 +0100
                Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-04 22:38 +0100
                Re: Reversing the rows of a table ?? "Mel Smith" <med_cutout_syntel@aol.com> - 2014-03-04 15:46 -0700
                Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-05 00:18 +0100
                Re: Reversing the rows of a table ?? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-03-04 16:17 -0800
                Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-05 09:06 +0100
                Re: Reversing the rows of a table ?? Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-05 17:49 +0100
                Re: Reversing the rows of a table ?? Christian Winter <thepoet_nospam@arcor.de> - 2014-03-05 06:50 +0100
                Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-05 09:07 +0100
                Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-05 16:42 +0100
                Re: Reversing the rows of a table ?? Christian Winter <thepoet_nospam@arcor.de> - 2014-03-06 07:28 +0100
                Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-06 10:58 +0100
                Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-06 11:11 +0100
                Re: Reversing the rows of a table ?? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-06 10:35 -0300
              Re: Reversing the rows of a table ?? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2014-03-04 11:06 -0800
                Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-04 20:22 +0100
                Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-04 20:55 +0100
  Re: Reversing the rows of a table ?? ompalompasales2@gmail.com - 2014-03-04 12:59 -0800
  Re: Reversing the rows of a table ?? Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-05 23:05 +0100
    Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-05 23:42 +0100
      Re: Reversing the rows of a table ?? Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-06 14:57 +0100
        Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-06 22:37 +0100
          Re: Reversing the rows of a table ?? Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-06 23:04 +0100
            Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-06 23:20 +0100
              Re: Reversing the rows of a table ?? Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-06 23:31 +0100
                Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-07 00:30 +0100
                Re: Reversing the rows of a table ?? Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-07 18:10 +0100
                Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-07 22:49 +0100
            Re: Reversing the rows of a table ?? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-06 19:21 -0300
              Re: Reversing the rows of a table ?? Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-06 23:41 +0100
                Re: Reversing the rows of a table ?? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-06 22:45 -0300
    Re: Reversing the rows of a table ?? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-05 23:47 +0100
      Re: Reversing the rows of a table ?? Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-06 14:57 +0100
    Re: Reversing the rows of a table ?? Denis McMahon <denismfmcmahon@gmail.com> - 2014-03-05 23:41 +0000
    Re: Reversing the rows of a table ?? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-06 18:56 -0300
      Re: Reversing the rows of a table ?? Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-06 23:18 +0100
        Re: Reversing the rows of a table ?? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-06 23:24 +0100

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