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FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21)

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  FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21) "FAQ server" <javascript@dotinternet.be> - 2012-12-21 00:00 +0000
    Re: FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21) Osmo Saarikumpu <osmo@weppipakki.com> - 2012-12-28 00:01 +0200
      Re: FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-12-27 23:30 +0100
        Re: FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21) Osmo Saarikumpu <osmo@weppipakki.com> - 2012-12-28 04:34 +0200
          Re: FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-12-28 12:56 +0100
            Re: FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21) Dr J R Stockton <reply1252@merlyn.demon.co.uk.invalid> - 2012-12-29 19:12 +0000
              Re: FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21) Gene Wirchenko <genew@telus.net> - 2012-12-29 22:32 -0800

#17783 — FAQ Topic - How do I get my browser to report javascript errors? (2012-12-21)

-----------------------------------------------------------------------
FAQ Topic - How do I get my browser to report javascript
errors?
-----------------------------------------------------------------------

There are debugging tools for many browsers. Learn to use them all.

Windows

Fiddler [ref 1].
Fiddler is an HTTP Debugging proxy (it won't find script
errors). Fiddler logs HTTP activity, like Firebug's Net
tab, but can be attached to any browser running on Windows.

Windows IE
Microsoft Script Editor. Included with Visual Studio or Microsoft
Word 2003 (discontinued in Office 2007).
To enable,
`Tools`, `Internet Options`, `Advanced`, and uncheck
`Disable Script Debugging`. After enabling Script Debugging,
a `Script Debugger` option will appear in the `View` menu.

http://jibbering.com/faq/IETester [ref 2] for testing IE 5.5- IE8.
http://jibbering.com/faq/CompanionJS [ref 3] `console` for IE.

_Note:_ For debugging scripts in IE, the Microsoft Script _Editor_
is recommended. However, if not available, the Microsoft Script Debugger [ref 4] may be somewhat helpful.

Internet Explorer Developer Toolbar [ref 5]

To report errors: Wait until a little yellow
triangle appears at the left end of the status bar, double click
on it and, when the error dialog box appears, check the "Always
show errors" checkbox it contains.

Or, `Internet Options`, `Advanced`, deselect `"Disable Script Debugging"`,
select `"Display a notification ..."`.

Firefox

`Tools > Error console` (`Ctrl` + `Shift` + `j`).

Firebug [ref 6]

YSlow [ref 7].
YSlow analyzes web pages and tells you why they're slow
based on Yahoo's rules for high performance web sites.

Lori [ref 8]
Lori or Life-of-request info, is useful for troubleshooting
server response and page load time.

Web Developer Toolbar [ref 9].

Cookie Watcher [ref 10].

XPather [ref 11].
XPath generator, editor and inspector.

Opera

Tools > Advanced > Error console

Introduction to Opera Dragonfly [ref 12]

Safari

To display the `Develop` menu in Safari 3.1 or higher, select
the checkbox labeled "Show Develop menu in menu bar" in
Safari's `Advanced` Preferences panel.

Safari Web Inspector [ref 13]

Chrome

JavaScript Console: click the `Page` menu icon and select
`Developer > JavaScript Console`. From here, you'll be
able to view errors in the JavaScript execution, and enter
additional javascript commands to execute.

JavaScript Debugger: available as `Page` menu icon > `Developer`
> Debug JavaScript, the debugger provides a command prompt from which you
can set breakpoints, backtrace, and more. Type `help` at the debugger
command line to get started.

  * Google Chrome Script Debugging [ref 14]

  * Developer Tools for Google Chrome [ref 15]

  * http://jibbering.com/faq/Tools for Eclipse Users [ref 16]

Mac IE

Use the Preferences dialog.

References:
-----------

[1] http://www.fiddlertool.com/fiddler/
[2] http://www.my-debugbar.com/wiki/IETester/HomePage
[3] http://www.my-debugbar.com/wiki/CompanionJS/HomePage
[4] http://www.microsoft.com/downloads/details.aspx?FamilyId=2F465BE0-94FD-4569-B3C4-DFFDF19CCD99&displaylang=en
[5] http://www.microsoft.com/downloads/details.aspx?FamilyID=e59c3964-672d-4511-bb3e-2d5e1db91038&displaylang=en
[6] http://getfirebug.com/
[7] https://addons.mozilla.org/en-US/firefox/addon/5369
[8] https://addons.mozilla.org/en-US/firefox/addon/1743
[9] https://addons.mozilla.org/en-US/firefox/addon/60
[10] https://addons.mozilla.org/en-US/firefox/addon/1201
[11] https://addons.mozilla.org/en-US/firefox/addon/1192
[12] http://dev.opera.com/articles/view/introduction-to-opera-dragonfly/
[13] http://trac.webkit.org/wiki/Web%20Inspector
[14] http://www.google.com/chrome/intl/en/webmasters-faq.html#jsexec
[15] http://blog.chromium.org/2009/06/developer-tools-for-google-chrome.html
[16] http://blog.chromium.org/2009/08/google-chrome-developer-tools-for.html


The complete comp.lang.javascript FAQ is at
http://jibbering.com/faq/

-- 

The sendings of these daily posts are proficiently hosted
by http://www.pair.com.

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#17849

On 21.12.2012 2:00, FAQ server wrote:
> -----------------------------------------------------------------------
> FAQ Topic - How do I get my browser to report javascript
> errors?

> Fiddler is an HTTP Debugging proxy (it won't find script
> errors).

This should be either completely re-written or forgotten.

As I'm inspired by the words uttered elsewhere by Mr. Korpela:

"The FAQ has indeed lost significance and keeps losing it."

I'm voting for the latter.

-- 
Best wishes, Osmo

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#17852

Osmo Saarikumpu wrote:

> On 21.12.2012 2:00, FAQ server wrote:
>> -----------------------------------------------------------------------
>> FAQ Topic - How do I get my browser to report javascript
>> errors?
>> 
>> Fiddler is an HTTP Debugging proxy (it won't find script
>> errors).
> 
> This should be either completely re-written or forgotten.
> 
> As I'm inspired by the words uttered elsewhere by Mr. Korpela:
> 
> "The FAQ has indeed lost significance and keeps losing it."
> 
> I'm voting for the latter.

Before you discount the value of a FAQ for a newsgroup too quickly, please 
consider that various efforts, some by regular contributors, are currently 
underway to fork, improve and even rewrite the FAQ for this newsgroup.

The FAQ postings, on the other hand, are so far from a two years outdated, 
unmaintained FAQ instead.  The person responsible for posting them either is 
not informed about that or does not care.

And JFTR, Jukka K. Korpela is neither a (long-time) regular nor (IMHO) a 
contributor at all here.  And if I am not very much mistaken, neither are 
you.  A newfound interest in this newsgroup leading to future valuable 
contributions to this newsgroup is always welcome.  But it should not be up 
to people like you to decide or advise what should or should not be done 
with regard to the FAQ of a newsgroup you have not actually been using or 
making a valuable contribution to.


PointedEars
-- 
Anyone who slaps a 'this page is best viewed with Browser X' label on
a Web page appears to be yearning for the bad old days, before the Web,
when you had very little chance of reading a document written on another
computer, another word processor, or another network. -- Tim Berners-Lee

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#17857

On 28.12.2012 0:30, Thomas 'PointedEars' Lahn wrote:

> Before you discount the value of a FAQ for a newsgroup too quickly, please 
> consider that various efforts, some by regular contributors, are currently 
> underway to fork, improve and even rewrite the FAQ for this newsgroup.

I see myself as valuing the efforts of maintaing and improving the FAQ.
At the same time I'm considering the points brought up by Mr. Korpela.
Before I proseed, I must state that I've always valued Mr. Korpela's
opinions and I'm his countryman === perhaps I'm biased here.

> The FAQ postings, on the other hand, are so far from a two years outdated, 
> unmaintained FAQ instead.  The person responsible for posting them either is 
> not informed about that or does not care.

Your point is very well taken.

> And JFTR, Jukka K. Korpela is neither a (long-time) regular nor (IMHO) a 
> contributor at all here.

I'm sure that you are right in the money in a technical sense. But at
the same time, I'm sure that he has a say in anything he sees as
debatable. His input, in my experience, is never shallow.

> And if I am not very much mistaken, neither are you.

You are correct. I'm in a sense a regular, but not capable of technical
contribution (== presenting code). But your point arises (or does it
beg) the question: is it all about techniques? What about foresight?

If I've understood Mr. Korpela's point correctly, he would direct us
(anybody that sees any need to follow this group, regardless of
technical skills) to the future, by questioning the status quo and
looking forward (without undermining the past).

> A newfound interest in this newsgroup leading to future valuable 
> contributions to this newsgroup is always welcome.  But it should not be up 
> to people like you to decide or advise what should or should not be done 
> with regard to the FAQ of a newsgroup you have not actually been using or 
> making a valuable contribution to.

Please take in account that I'm not deciding anything nor advising
anybody. I'm expressing my opinion like anybody else here, with the same
right that you have to your opinion. Please do not confuse (group)
seniority or technical ability with freedom of speech.

-- 
Best wishes, Osmo

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#17870

Osmo Saarikumpu wrote:

> On 28.12.2012 0:30, Thomas 'PointedEars' Lahn wrote:
>> Before you discount the value of a FAQ for a newsgroup too quickly,
>> please consider that various efforts, some by regular contributors, are
>> currently underway to fork, improve and even rewrite the FAQ for this
>> newsgroup.
> 
> I see myself as valuing the efforts of maintaing and improving the FAQ.
> At the same time I'm considering the points brought up by Mr. Korpela.
> Before I proseed, I must state that I've always valued Mr. Korpela's
> opinions and I'm his countryman === perhaps I'm biased here.

Perhaps.
 
>> And JFTR, Jukka K. Korpela is neither a (long-time) regular nor (IMHO) a
>> contributor at all here.
> 
> I'm sure that you are right in the money in a technical sense. But at
> the same time, I'm sure that he has a say in anything he sees as
> debatable. His input, in my experience, is never shallow.

You might want to review that opinion.

>> And if I am not very much mistaken, neither are you.
> 
> You are correct. I'm in a sense a regular, but not capable of technical
> contribution (== presenting code). But your point arises (or does it
> beg) the question: is it all about techniques? What about foresight?
> 
> If I've understood Mr. Korpela's point correctly, he would direct us
> (anybody that sees any need to follow this group, regardless of
> technical skills) to the future, by questioning the status quo and
> looking forward (without undermining the past).

I am not going to start a discussion about you or Jukka K. Korpela here.
My intention is not to start a flame war (and if you follow e. g. this 
newsgroup closely, you already know that it never is).  What I want to point 
out is this: It is too easy to question the status quo, and to look forward, 
being a bystander.

There is a noticable – IMHO disturbingly and inappropriately high – 
percentage of people here who have not actually contributed anything to this 
newsgroup when it comes to the topic of this newsgroup but think they should 
have a say as to the direction this newsgroup and its FAQ should be taking.

And yet, Jukka K. Korpela is a good example of that.  When has he hit this 
newsgroup last – December 1 this month, in the thread "Maintainer of the 
FAQ"?  How many postings in total since he hit it first in 2000 – 556?  How 
often has he posted here then on the average – less than one posting a week?  
How many of his postings are actually on topic?  How many actually contain 
insight on the topic, how many source code?  How many of them are actually 
flames (I leave the counting to you)?

<https://groups.google.com/groups/search?as_q=&as_epq=&as_oq=&as_eq=&num=10&scoring=&lr=&as_sitesearch=&as_qdr=&as_mind=1&as_minm=1&as_miny=2012&as_maxd=1&as_maxm=1&as_maxy=2012&as_ugroup=comp.lang.javascript&as_usubject=&as_uauthors=Korpela&safe=off>

By contrast, several others have contributed, almost daily, for years, some 
for more than a century, *thousands* of valuable *on-topic* postings here, 
containing both *insight* and *source code* instead of merely opinion.  And 
when they did voice their opinion, it was based on *professional experience* 
backed up by *sound arguments*, even *references*.

IMNSHO, there are, especially recently, too many like Jukka K. Korpela who 
should first put their money where their big mouth is.

>> A newfound interest in this newsgroup leading to future valuable
>> contributions to this newsgroup is always welcome.  But it should not be
>> up to people like you to decide or advise what should or should not be
>> done with regard to the FAQ of a newsgroup you have not actually been
>> using or making a valuable contribution to.
> 
> Please take in account that I'm not deciding anything nor advising
> anybody. I'm expressing my opinion like anybody else here, with the same
> right that you have to your opinion. Please do not confuse (group)
> seniority or technical ability with freedom of speech.

I accept that there is freedom of speech, I am in favor of it, and I value 
it.  But if you look at the situation here objectively, one cannot evade 
asking some important questions:

Is is not surprising that many people who have not even been regularly 
contributing anything here now seem like crawling out of their holes and 
giving their opinions, or rather complaints, as if they had been daily 
regulars for a century?

What will happen to those people when they find nothing more to complain 
about?  Or is that their only purpose here?

What kind of contribution to a newsgroup is that, really?

Finally, how important should one deem such opinions for decision-making 
processes?


HTH

PointedEars
-- 
> If you get a bunch of authors […] that state the same "best practices"
> in any programming language, then you can bet who is wrong or right...
Not with javascript. Nonsense propagates like wildfire in this field.
  -- Richard Cornford, comp.lang.javascript, 2011-11-14

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#17880

In comp.lang.javascript message <15610637.pCtXS2nXug@PointedEars.de>,
Fri, 28 Dec 2012 12:56:12, Thomas 'PointedEars' Lahn
<PointedEars@web.de> posted:

>Osmo Saarikumpu wrote
.


>I am not going to start a discussion about you or Jukka K. Korpela here.

If you had sincerely intended that, you would not have posted the
article to which I am responding.

>My intention is not to start a flame war (and if you follow e. g. this
>newsgroup closely, you already know that it never is).

But you commonly have that effect.


>There is a noticable – IMHO disturbingly and inappropriately high –
>percentage of people here who have not actually contributed anything to this
>newsgroup when it comes to the topic of this newsgroup but think they should
>have a say as to the direction this newsgroup and its FAQ should be taking.

The FAQ is intended predominantly for readers of the group, and not for
writers to the group.  Without readers, writers are wasting their time.


>And yet, Jukka K. Korpela is a good example of that.  When has he hit this
>newsgroup last – December 1 this month, in the thread "Maintainer of the
>FAQ"?  How many postings in total since he hit it first in 2000 – 556?  How
>often has he posted here then on the average – less than one posting a
>week?

How often have you posted?  Too often.  You need a real job.


>By contrast, several others have contributed, almost daily, for years, some
>for more than a century,

That's remarkably improbable - posting for of the order of a third of a
century before the introduction of programmable computers, to a
newsgroup about a language which is under twenty years old.


>IMNSHO,

That sums up your psychological condition magnificently.  Get it cured.


> there are, especially recently, too many like Jukka K. Korpela who
>should first put their money where their big mouth is.

Jukka at least knows what he wants to say and rarely needs to correct
himself.

-- 
 (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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#17886

On Sat, 29 Dec 2012 19:12:22 +0000, Dr J R Stockton
<reply1252@merlyn.demon.co.uk.invalid> wrote:

[snip]

>>There is a noticable – IMHO disturbingly and inappropriately high –
>>percentage of people here who have not actually contributed anything to this
>>newsgroup when it comes to the topic of this newsgroup but think they should
>>have a say as to the direction this newsgroup and its FAQ should be taking.

     The heaviest users of the FAQ might be newbies who rarely will
have contributed much to the newsgroup at that point.  Naturally, they
might well have ideas about how the FAQ should be set up so that they
can get good use out of it.

>The FAQ is intended predominantly for readers of the group, and not for
>writers to the group.  Without readers, writers are wasting their time.

     Agreed.

[snip]

Sincerely,

Gene Wirchenko

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