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Detection of devices using JavaScript

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  Detection of devices using JavaScript "Sithu.D" <zebra05@gmail.com> - 2014-05-15 02:32 -0700
    Re: Detection of devices using JavaScript Denis McMahon <denismfmcmahon@gmail.com> - 2014-05-15 16:27 +0000
      Re: Detection of devices using JavaScript Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-05-15 18:40 +0200
        Re: Detection of devices using JavaScript Christoph Michael Becker <cmbecker69@arcor.de> - 2014-05-15 19:20 +0200
          Re: Detection of devices using JavaScript "Sithu.D" <zebra05@gmail.com> - 2014-05-15 23:56 -0700
            Re: Detection of devices using JavaScript Christoph Michael Becker <cmbecker69@arcor.de> - 2014-05-16 13:03 +0200
              Re: Detection of devices using JavaScript Simon Lewis <simonlewis2001@gmail.com> - 2014-05-16 15:14 +0200
                Re: Detection of devices using JavaScript Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-05-16 15:46 +0200
        Re: Detection of devices using JavaScript John Harris <niam@jghnorth.org.uk.invalid> - 2014-05-16 09:49 +0100

#24170 — Detection of devices using JavaScript

Hi everyone,

I need to find a way to detect the type of device and os calling an API using JavaScript. I preferable need to do this in some way more reliable than detecting the User Agent. Any ideas please?

Thanks,
Sithu.D

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#24171

On Thu, 15 May 2014 02:32:25 -0700, Sithu.D wrote:

> I need to find a way to detect the type of device and os calling an API
> using JavaScript. I preferable need to do this in some way more reliable
> than detecting the User Agent. Any ideas please?

Is this javascript operating inside a web browser, or is it a script 
interpreter embedded in some other application?

-- 
Denis McMahon, denismfmcmahon@gmail.com

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#24172

Denis McMahon wrote:

> On Thu, 15 May 2014 02:32:25 -0700, Sithu.D wrote:
>> I need to find a way to detect the type of device and os calling an API
>> using JavaScript. I preferable need to do this in some way more reliable
>> than detecting the User Agent. Any ideas please?
> 
> Is this javascript operating inside a web browser, or is it a script

There is no javascript.  <http://PointedEars.de/es-matrix>

> interpreter embedded in some other application?

More important: Why?

In most cases the need to “detect the type of device and os” is only a need 
perceived because of lack of experience, not an actual need.

-- 
PointedEars
FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix>
Please do not Cc: me. / Bitte keine Kopien per E-Mail.

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#24173

Thomas 'PointedEars' Lahn wrote:

> Denis McMahon wrote:
> 
>> On Thu, 15 May 2014 02:32:25 -0700, Sithu.D wrote:
>>> I need to find a way to detect the type of device and os calling an API
>>> using JavaScript. I preferable need to do this in some way more reliable
>>> than detecting the User Agent. Any ideas please?
>>
>> Is this javascript operating inside a web browser, or is it a script
> 
> There is no javascript.  <http://PointedEars.de/es-matrix>

ACK

>> interpreter embedded in some other application?

As the OP mentioned that he would prefer something more reliable than
detecting the User Agent, it's likely that they were asking about
browser side scripting.

> More important: Why?
> 
> In most cases the need to “detect the type of device and os” is only a need 
> perceived because of lack of experience, not an actual need.

ACK (at least wrt. to browser side scripting).

-- 
Christoph M. Becker

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#24180

On Thursday, May 15, 2014 7:20:53 PM UTC+2, Christoph Michael Becker wrote:
> Thomas 'PointedEars' Lahn wrote:
> 
> 
> 
> > Denis McMahon wrote:
> 
> > 
> 
> >> On Thu, 15 May 2014 02:32:25 -0700, Sithu.D wrote:
> 
> >>> I need to find a way to detect the type of device and os calling an API
> 
> >>> using JavaScript. I preferable need to do this in some way more reliable
> 
> >>> than detecting the User Agent. Any ideas please?
> 
> >>
> 
> >> Is this javascript operating inside a web browser, or is it a script
> 
> > 
> 
> > There is no javascript.  <http://PointedEars.de/es-matrix>
> 
> 
> 
> ACK
> 
> 
> 
> >> interpreter embedded in some other application?
> 
> 
> 
> As the OP mentioned that he would prefer something more reliable than
> 
> detecting the User Agent, it's likely that they were asking about
> 
> browser side scripting.
> 
> 
> 
> > More important: Why?
> 
> > 
> 
> > In most cases the need to "detect the type of device and os" is only a need 
> 
> > perceived because of lack of experience, not an actual need.
> 
> 
> 
> ACK (at least wrt. to browser side scripting).
> 
> 
> 
> -- 
> 
> Christoph M. Becker

Thanks, Christoph. It turns out all that I need is a regex pattern to search the User Agent after all. I got conflicting requirements. The real idea is to detect a mobile device on a website and then show the user an app download page.

Kind regards.

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#24184

Sithu.D wrote:

> On Thursday, May 15, 2014 7:20:53 PM UTC+2, Christoph Michael Becker
> wrote:
> 
>> Thomas 'PointedEars' Lahn wrote:
>> 
>>> In most cases the need to "detect the type of device and os" is
>>> only a need
>> 
>>> perceived because of lack of experience, not an actual need.
>> 
>> ACK (at least wrt. to browser side scripting).
> 
> Thanks, Christoph. It turns out all that I need is a regex pattern to
> search the User Agent after all. I got conflicting requirements. The
> real idea is to detect a mobile device on a website and then show the
> user an app download page.

As Thomas has already hinted at, using the user agent string to detect
the browser/device is unreliable.  See
<http://pointedears.de/scripts/faq/cljs/#detectBrowser>; the article
doesn't deal with mobile devices, but the issues pointed out are
basically the same.  At least you should offer some way to get to the
download page for all users.

However, it seems to be preferable to look for a more reliable solution
in the first place.  I don't know if there exists such a solution, though.

-- 
Christoph M. Becker

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#24185

Christoph Michael Becker <cmbecker69@arcor.de> writes:

> Sithu.D wrote:
>
>> On Thursday, May 15, 2014 7:20:53 PM UTC+2, Christoph Michael Becker
>> wrote:
>> 
>>> Thomas 'PointedEars' Lahn wrote:
>>> 
>>>> In most cases the need to "detect the type of device and os" is
>>>> only a need
>>> 
>>>> perceived because of lack of experience, not an actual need.
>>> 
>>> ACK (at least wrt. to browser side scripting).
>> 
>> Thanks, Christoph. It turns out all that I need is a regex pattern to
>> search the User Agent after all. I got conflicting requirements. The
>> real idea is to detect a mobile device on a website and then show the
>> user an app download page.
>
> As Thomas has already hinted at, using the user agent string to detect
> the browser/device is unreliable.  See
> <http://pointedears.de/scripts/faq/cljs/#detectBrowser>; the article
> doesn't deal with mobile devices, but the issues pointed out are
> basically the same.  At least you should offer some way to get to the
> download page for all users.
>
> However, it seems to be preferable to look for a more reliable solution
> in the first place.  I don't know if there exists such a solution,
> though.

No. Use the user agent. Why? because thats what people use when they
*want* the full content or alternate content for a different device.

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#24186

Simon Lewis wrote:

> Christoph Michael Becker <cmbecker69@arcor.de> writes:
>> As Thomas has already hinted at, using the user agent string to detect
>> the browser/device is unreliable.  See
>> <http://pointedears.de/scripts/faq/cljs/#detectBrowser>; the article
>> doesn't deal with mobile devices, but the issues pointed out are
>> basically the same.  At least you should offer some way to get to the
>> download page for all users.
>>
>> However, it seems to be preferable to look for a more reliable solution
>> in the first place.  I don't know if there exists such a solution,
>> though.
> 
> No. Use the user agent. Why? because thats what people use when they
> *want* the full content or alternate content for a different device.

You have learned from the wrong people again.  You know, the same people 
that said augmenting host objects would be OK.

-- 
PointedEars
FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix>
Please do not Cc: me. / Bitte keine Kopien per E-Mail.

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#24182

On Thu, 15 May 2014 18:40:24 +0200, Thomas 'PointedEars' Lahn
<PointedEars@web.de> wrote:

>Denis McMahon wrote:
>
>> On Thu, 15 May 2014 02:32:25 -0700, Sithu.D wrote:
>>> I need to find a way to detect the type of device and os calling an API
>>> using JavaScript. I preferable need to do this in some way more reliable
>>> than detecting the User Agent. Any ideas please?
>> 
>> Is this javascript operating inside a web browser, or is it a script
>
>There is no javascript.  <http://PointedEars.de/es-matrix>
  <snip>

javascript : A convenient name for the group of programming 
languages that use most of the syntax and semantics described in
ECMA 262.

  John

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