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Groups > comp.lang.javascript > #8268
| From | "Richard Cornford" <Richard@litotes.demon.co.uk> |
|---|---|
| Newsgroups | comp.lang.javascript |
| References | <bd12b66f-33f5-43d2-8e22-6f81b42c3d8b@n14g2000vbn.googlegroups.com> <rYKdncJ8NIQbtyHTnZ2dnUVZ8rmdnZ2d@brightview.co.uk> <i8udnZ_j4_W38yHTnZ2dnUVZ8tydnZ2d@giganews.com> <igfsb7dbrl2oifb5jl4hj8124h67omn959@4ax.com> |
| Subject | Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions |
| Date | 2011-11-12 19:19 +0000 |
| Message-ID | <TJydnS7Bc-tPWyPTnZ2dnUVZ8oidnZ2d@giganews.com> (permalink) |
Hans-Georg Michna wrote:
> On Fri, 11 Nov 2011 00:36:57 -0000, Richard Cornford wrote:
>
>>Welcome to the low entry cost world of browser scripting.
>>
>>So, an illustration, but which one? Try this, go to
>><URL: http://www.google.com/codesearch >
>>and in the search box at the top of the page enter the following
>>line:-
>>
>>typeof\s*\(?\s*[\S]+\s*\)?\s*(!|=)==?\s*("|')array("|')
>>lang:javascript
>>
>>- and do the search. It gets 4,000+ results (including from
>> a cross-section of 'popular' libraries) along the lines of:-
>
> Nice! I just got 19,000+ hits. Strange that it varies so much.
Google don't have the best of records when it comes to programming
adding up, so varying result counts shouldn't be too unexpected. On the
other hand, back in 2009 when I last posted about using Google's code
search to look for this code (using the same regular expression) the
number of hits were coming up at around 2,000. So it does appear that
this particular cargo cult programming example is still propagating
(even if the worst offenders have since learnt enough to drop it).
> Anyway, do you have more examples? These would be good demos of
> the general ignorance towards correct JavaScript programming.
> Good for demos.
The other example that is common enough, and sufficiently distinct, that
Google's code search will turn up examples would be found with the
search expression:-
<scr("|')\+("|')ipt lang:javascript
- of which a representative example (from an old dojo version, and
re-wrapped for posting) is:-
document.write(
"<scr"+"ipt type='text/javascript' src='"+tmps[x]+"'></scr"+"ipt>"
);
The cargo-cult programming structure is the first (left-most) string
concatenation operation. The final (right-most) string concatenation
operation has some justification in some contexts. Its use in those
contexts demonstrates a shallow understanding of the reasons for its use
(as there are more efficient, shorter and more formally correct
alternatives), and it was almost certainly that shallow understanding
that inspired the real cargo-cult structure to the left. However, One
context where the final (right-most) concatenation is purposeless is
when it is found in an imported JS file, which is of course where
Google's code search is finding it. So that too is pushing cargo-cult
programming in the contexts where it is being found above.
Richard.
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David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-11-10 06:09 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "J.R." <groups_jr-1@yahoo.com.br> - 2011-11-10 16:57 -0200
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-11-10 11:54 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "Ant" <not@home.today> - 2011-11-10 19:47 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-11-10 13:07 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Matt McDonald <matt@fortybelow.ca> - 2011-11-10 14:12 -0700
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-11-11 07:26 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Frobernik <nospam@nospam.com> - 2011-11-17 22:43 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-02 16:08 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Frobernik <nospam@nospam.com> - 2011-12-06 21:18 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-06 14:13 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Gene Wirchenko <genew@ocis.net> - 2011-11-10 13:17 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "Evertjan." <exjxw.hannivoort@interxnl.net> - 2011-11-10 22:43 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "Richard Cornford" <Richard@litotes.demon.co.uk> - 2011-11-11 00:36 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Gene Wirchenko <genew@ocis.net> - 2011-11-10 19:14 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "Richard Cornford" <Richard@litotes.demon.co.uk> - 2011-11-11 09:59 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Gene Wirchenko <genew@ocis.net> - 2011-11-11 11:04 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2011-11-11 14:39 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2011-11-12 10:38 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "Richard Cornford" <Richard@litotes.demon.co.uk> - 2011-11-12 19:19 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2011-11-12 21:07 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-11-13 00:42 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "Richard Cornford" <Richard@litotes.demon.co.uk> - 2011-11-13 14:33 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2011-11-17 23:14 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "Richard Cornford" <Richard@litotes.demon.co.uk> - 2011-11-17 23:55 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2011-11-13 20:22 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions RobG <rgqld@iinet.net.au> - 2011-11-13 08:29 +1000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2011-11-13 20:25 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions RobG <rgqld@iinet.net.au> - 2011-11-13 23:05 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Tim Down <timdown@gmail.com> - 2011-11-14 03:41 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions RobG <rgqld@iinet.net.au> - 2011-11-16 16:18 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-02 16:03 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2011-11-15 16:52 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-02 15:54 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "Jukka K. Korpela" <jkorpela@cs.tut.fi> - 2011-11-13 10:38 +0200
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Dr J R Stockton <reply1145@merlyn.demon.co.uk> - 2011-11-11 21:33 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-02 15:00 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-02 18:38 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "J.R." <groups_jr-1@yahoo.com.br> - 2011-12-03 19:50 -0200
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-03 15:50 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-03 16:38 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-03 17:14 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2011-12-04 11:07 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-04 02:45 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-04 13:37 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-04 16:01 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-04 16:28 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-04 18:56 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions John G Harris <john@nospam.demon.co.uk> - 2011-12-05 14:39 +0000
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-05 11:00 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-03 19:17 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "J.R." <groups_jr-1@yahoo.com.br> - 2011-11-13 00:06 -0200
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-11-13 04:31 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "J.R." <groups_jr-1@yahoo.com.br> - 2011-11-13 13:44 -0200
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-11-13 18:35 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "J.R." <groups_jr-1@yahoo.com.br> - 2011-11-13 22:00 -0200
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-11-14 12:40 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions "J.R." <groups_jr-1@yahoo.com.br> - 2011-11-14 11:52 -0200
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-11-14 15:40 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2011-11-17 11:16 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-11-17 21:06 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2011-11-17 22:13 +0100
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-02 15:19 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-02 15:10 -0800
Re: David Mark's Javascript Tip Du Jour - Volume #1 - Tip #1234 - How to Measure Element Dimensions David Mark <dmark.cinsoft@gmail.com> - 2011-12-02 18:04 -0800
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