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Is it possible to do AJAX coding on the *same* computer?

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  Is it possible to do AJAX coding on the *same* computer? bit-naughty@hotmail.com - 2016-08-02 09:49 -0700
    Re: Is it possible to do AJAX coding on the *same* computer? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-08-02 22:26 -0700
    Re: Is it possible to do AJAX coding on the *same* computer? bit-naughty@hotmail.com - 2016-08-02 23:48 -0700
      Re: Is it possible to do AJAX coding on the *same* computer? Andrew Poulos <ap_prog@hotmail.com> - 2016-08-03 17:58 +1000
        Re: Is it possible to do AJAX coding on the *same* computer? I Am Here <iamhereintheworld@gmail.com> - 2016-08-03 13:16 -0700
          Re: Is it possible to do AJAX coding on the *same* computer? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-08-03 16:13 -0700
            Re: Is it possible to do AJAX coding on the *same* computer? bit-naughty@hotmail.com - 2016-08-04 06:56 -0700
              Re: Is it possible to do AJAX coding on the *same* computer? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-08-04 09:37 -0700
                Re: Is it possible to do AJAX coding on the *same* computer? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-04 19:22 +0200
                  Re: Is it possible to do AJAX coding on the *same* computer? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-08-04 10:57 -0700
                    Re: Is it possible to do AJAX coding on the *same* computer? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-04 20:20 +0200
                      Re: Is it possible to do AJAX coding on the *same* computer? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-08-04 13:22 -0700
                        Re: Is it possible to do AJAX coding on the *same* computer? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-05 07:37 +0200
                          User scripts (was: Is it possible to do AJAX coding on the *same* computer?) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-06 13:38 +0200
                Re: Is it possible to do AJAX coding on the *same* computer? bit-naughty@hotmail.com - 2016-08-05 12:44 -0700
                  Re: Is it possible to do AJAX coding on the *same* computer? Tim Streater <timstreater@greenbee.net> - 2016-08-06 20:08 +0100
    Re: Is it possible to do AJAX coding on the *same* computer? Tim Streater <timstreater@greenbee.net> - 2016-08-06 20:00 +0100
    Re: Is it possible to do AJAX coding on the *same* computer? bit-naughty@hotmail.com - 2016-08-08 04:18 -0700
      Re: Is it possible to do AJAX coding on the *same* computer? Tim Streater <timstreater@greenbee.net> - 2016-08-08 12:23 +0100

#31026 — Is it possible to do AJAX coding on the *same* computer?

If I have LAMP installed on my machine, on the *same* machine that I'm doing front end coding on, can I do AJAX coding on it, by connecting to localhost? Would there be any hitches?

I'd probably be using CentOS, but maybe I'll try some other distros as well....?


Thanks.

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#31043

On Tuesday, August 2, 2016 at 11:49:58 AM UTC-5, bit-n...@hotmail.com wrote:
> If I have LAMP installed on my machine, on the *same* machine that I'm doing front end coding on, can I do AJAX coding on it, by connecting to localhost? Would there be any hitches?
> 
> I'd probably be using CentOS, but maybe I'll try some other distros as well....?


Just make sure the domains match, otherwise you'll have to deal with CORS issues.

<https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS>

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#31044

Umm sorry, I find this quite confusing..... - what do I have to *do*, exactly?

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#31045

On 3/08/2016 4:48 PM, bit-naughty@hotmail.com wrote:
> Umm sorry, I find this quite confusing..... - what do I have to *do*, exactly?
>
Perhaps quote what you are referring to?

Andrew Poulos

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#31050

On Wednesday, August 3, 2016 at 1:28:48 PM UTC+5:30, Andrew Poulos wrote:

> Perhaps quote what you are referring to?


I meant - WHICH domains matching, and what do I do to do that?

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#31053

On Wednesday, August 3, 2016 at 3:17:12 PM UTC-5, I Am Here wrote:
> On Wednesday, August 3, 2016 at 1:28:48 PM UTC+5:30, Andrew Poulos wrote:
> 
> > Perhaps quote what you are referring to?
> 
> 
> I meant - WHICH domains matching, and what do I do to do that?

localhost of course. The one you said you are connecting to and running your site on

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#31057

On Thursday, August 4, 2016 at 4:43:42 AM UTC+5:30, Michael Haufe (TNO) wrote:
> On Wednesday, August 3, 2016 at 3:17:12 PM UTC-5, I Am Here wrote:
> > On Wednesday, August 3, 2016 at 1:28:48 PM UTC+5:30, Andrew Poulos wrote:
> > 
> > > Perhaps quote what you are referring to?
> > 
> > 
> > I meant - WHICH domains matching, and what do I do to do that?
> 
> localhost of course. The one you said you are connecting to and running your site on

Yeah - match WITH what??? What has to match with what??

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#31059

On Thursday, August 4, 2016 at 8:56:48 AM UTC-5, bit-n...@hotmail.com wrote:
> On Thursday, August 4, 2016 at 4:43:42 AM UTC+5:30, Michael Haufe (TNO) wrote:
> > On Wednesday, August 3, 2016 at 3:17:12 PM UTC-5, I Am Here wrote:
> > > On Wednesday, August 3, 2016 at 1:28:48 PM UTC+5:30, Andrew Poulos wrote:
> > > 
> > > > Perhaps quote what you are referring to?
> > > 
> > > 
> > > I meant - WHICH domains matching, and what do I do to do that?
> > 
> > localhost of course. The one you said you are connecting to and running your site on
> 
> Yeah - match WITH what??? What has to match with what??

you match your ajax request url 'http://localhost' with the local website you set up on your machine called: 'http://localhost'.

if you set your local site with a different url, then the ajax request url should match that different url.

<https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Using_XMLHttpRequest>

If you're asking how to install and setup LAMP in the first place, then that is off-topic for this mailing list. 

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#31061

Michael Haufe (TNO) wrote:

> On Thursday, August 4, 2016 at 8:56:48 AM UTC-5, bit-n...@hotmail.com
> wrote:

It’s attribution _line_, not attribution novel.  Why it should only be one 
line per quotation level is evident from your posting as it contains several 
quotation levels: it is hard to read then, hard to associate the quotation 
with an author.

The one-line recommendation can be easily met by omitting superfluous 
information (see my attribution line for example).  One of the technical 
flaws of Google Groups (see below) is to include superfluous information in 
the attribution by default (even pointless one like trimmed sender 
addresses), and there is no way to change that default.  Whereas with a 
proper newsreader you can change it to something shorter and/or less 
superfluous.

>> On Thursday, August 4, 2016 at 4:43:42 AM UTC+5:30, Michael Haufe (TNO)
>> wrote:
>> > On Wednesday, August 3, 2016 at 3:17:12 PM UTC-5, I Am Here wrote:
>> > > On Wednesday, August 3, 2016 at 1:28:48 PM UTC+5:30, Andrew Poulos
>> > > wrote:
>> > > > Perhaps quote what you are referring to?
>> > > I meant - WHICH domains matching, and what do I do to do that?
>> > 
>> > localhost of course. The one you said you are connecting to and running
>> > your site on
>> Yeah - match WITH what??? What has to match with what??
> 
> you match your ajax request url 'http://localhost' with the local website
> you set up on your machine called: 'http://localhost'.
> 
> if you set your local site with a different url, then the ajax request url
> should match that different url.

Unnecessary.  If one is using a local Web server for development, the 
request URI can be a URI-reference: “/foo” instead of 
“http://localhost/foo”.  The advantage of that is that the source code need 
not be changed after upload to the public Web server, a change of protocol 
or of domain.
 
> If you're asking how to install and setup LAMP in the first place, then
> that is off-topic for this mailing list.

This is a _Usenet newsgroup_.  Only to users of Google Groups such as 
yourself it might look as if it were a Web forum or a mailing list.  Because 
of its technical flaws and the clientele that it usually attracts, you 
should not be using Google Groups for posting.  I am not even reading 
postings injected into Usenet from there since 2014 (IIRC); your postings 
are the only exception now, because of their comparably low S∕N.

-- 
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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#31062

On Thursday, August 4, 2016 at 12:22:45 PM UTC-5, Thomas 'PointedEars' Lahn wrote:

> Unnecessary.  If one is using a local Web server for development, the 
> request URI can be a URI-reference: “/foo” instead of 
> “http://localhost/foo”.  The advantage of that is that the source code need 
> not be changed after upload to the public Web server, a change of protocol 
> or of domain.

Given there is no information from the OP, I don't even want to assume he's even trying to request something from the same domain

> This is a _Usenet newsgroup_.  Only to users of Google Groups such as 
> yourself it might look as if it were a Web forum or a mailing list.  Because 
> of its technical flaws and the clientele that it usually attracts, you 
> should not be using Google Groups for posting.  I am not even reading 
> postings injected into Usenet from there since 2014 (IIRC); your postings 
> are the only exception now, because of their comparably low S∕N.

Is there a free alternative that doesn't require me to download a new client across a handful of machines?

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#31063

Michael Haufe (TNO) wrote:

[trimmed attribution novel]

> […] Thomas 'PointedEars' Lahn wrote: 
> 
> Given there is no information from the OP, I don't even want to assume
> he's even trying to request something from the same domain

A distinct possibility.  But then your suggestion makes even less sense to 
me.
 
> Is there a free alternative [to buggy, trolled, spammed Google Groups] 
> that doesn't require me to download a new client across a handful of
> machines?

As Spock said, there are always alternatives :)

I am also working on one: a Web application based on KNode (which is not 
supported by KDE anymore).

-- 
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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#31065

Thomas 'PointedEars' Lahn wrote:
> Michael Haufe (TNO) wrote:

> > Given there is no information from the OP, I don't even want to assume
> > he's even trying to request something from the same domain
> 
> A distinct possibility.  But then your suggestion makes even less sense to 
> me.

If there was a standalone html file opened directly from the filesystem, that wouldn't be 'localhost', yet it could attempt to make a request to a local server with a proper http(s) url. That's what I was referring to

> > Is there a free alternative [to buggy, trolled, spammed Google Groups] 
> > that doesn't require me to download a new client across a handful of
> > machines?

Nice substitution... so very true

> I am also working on one: a Web application based on KNode (which is not 
> supported by KDE anymore).

I'd look forward to seeing it. I vaguely recall that one of the group members was working on a GreaseMonkey script that would make the GG interface bearable.  That may be something worth revisiting. I'd dig through the archives to find it, but the GG interface has changed significantly since it was written.

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#31070

Michael Haufe (TNO) wrote:

> Thomas 'PointedEars' Lahn wrote:
>> Michael Haufe (TNO) wrote:
>> > Given there is no information from the OP, I don't even want to assume
>> > he's even trying to request something from the same domain
>> A distinct possibility.  But then your suggestion makes even less sense
>> to me.
> 
> If there was a standalone html file opened directly from the filesystem,
> that wouldn't be 'localhost', yet it could attempt to make a request to a
> local server with a proper http(s) url. That's what I was referring to

ACK.  If CORS is supported by the client, then it is possible to make 
requests this way if the server sends

Access-Control-Allow-Origin: *

or

Access-Control-Allow-Origin: null

[The latter variant, which corresponds to the CORS specification [1], works 
in Chromium “51.0.2704.79 Built on 8.4, running on Debian stretch/sid (64-
bit)” and Iceweasel 38.1.0.  However, by contrast to the former, CORS would 
then only work from non-HTTP sites like file://… to the HTTP site.]

Stefan Ram has described correctly how to do this with Apache in general.

But the OP has said that they have installed LAMP (Linux Apache MySQL PHP) 
on their machine.  I agree that the OP is a bit vague, but it appears a 
stretch to me to assume that they are meaning requests from “file://”.
 
>> > Is there a free alternative [to buggy, trolled, spammed Google Groups]
>> > that doesn't require me to download a new client across a handful of
>> > machines?
> 
> Nice substitution... so very true

I have read a funny remark to the GG situation yesterday, which I found so 
apt that I added it to my sig file:

  “[…] instead of firing any incompetent programmers they may accidentally
   hire, they send them to a dungeon deep below their main building, where
    they work on making Google Groups worse.”
       –Michael Moroney in <news:nnu48k$c7o$1@pcls7.std.com>

>> I am also working on one: a Web application based on KNode (which is not
>> supported by KDE anymore).
> 
> I'd look forward to seeing it.

As I am to writing it.  Thanks.

> I vaguely recall that one of the group members was working on a
> GreaseMonkey script that would make the GG interface bearable.  That may
> be something worth revisiting. I'd dig through the archives to find it,
> but the GG interface has changed significantly since it was written.

The markup did not change that much, so I was able to tweak my original 
script (which I am not sure I published here) inasfar as that the initial 
thread view is modified (threads recognized as spam by the word filter can 
be marked as such, a [user] stylesheet can then hide them).  While doing 
that I (re)discovered that pattern for when the “load” event is 
insufficient:

  /* or with window.setTimeout(…) and .clearTimeout(…) */
  var interval = window.setInterval(function () {
    var keyElement = document.getElement…(…);
    if (!keyElement || !keyElement.length) return;

    window.clearInterval(interval);

    /* Do things if keyElement is there/non-empty */
  }, pollingInterval);

This pattern is so common that it could be generalized into a method –

  jsx.waitFor(conditionCallback, pollingInterval, actionCallback);

so that you could write instead
  
  var keyElement;

  jsx.waitFor(
    () => {
      keyElement = document.getElement…(…);
      return (!keyElement || !keyElement.length);
    },
    pollingInterval,
    () => {
      /* Do things if keyElement is there/non-empty */
    });

The main problem is that Google Groups is loading threads asynchronously now 
(plus continuous scrolling), and there are no events that I can see that I 
could add a listener for (is there a Google Groups API?); so the marking 
procedure would have to be adapted for continuous polling [sic], too, before 
the script is usable.

As I indicated, I would rather spend the time on writing something 
considerably better than Google Groups, something with which one is also not 
dependent on a single Web site.  But maybe further tweaks would help me in 
both development directions (continuous scrolling is an intriguing concept 
for a newsreader, particularly a Web-based one).

-- 
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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#31087 — User scripts (was: Is it possible to do AJAX coding on the *same* computer?)

Thomas 'PointedEars' Lahn wrote:

> Michael Haufe (TNO) wrote:
>> I vaguely recall that one of the group members was working on a
>> GreaseMonkey script that would make the GG interface bearable.  That may
>> be something worth revisiting. I'd dig through the archives to find it,
>> but the GG interface has changed significantly since it was written.
> 
> The markup did not change that much, so I was able to tweak my original
> script (which I am not sure I published here) inasfar as that the initial
> thread view is modified (threads recognized as spam by the word filter can
> be marked as such, a [user] stylesheet can then hide them).  […]
> 
> The main problem is that Google Groups is loading threads asynchronously
> now (plus continuous scrolling), and there are no events that I can see
> that I could add a listener for (is there a Google Groups API?); so the
> marking procedure would have to be adapted for continuous polling [sic],
> too, before the script is usable.
> 
> As I indicated, I would rather spend the time on writing something
> considerably better than Google Groups, something with which one is also
> not dependent on a single Web site.  But maybe further tweaks would help
> me in both development directions (continuous scrolling is an intriguing
> concept for a newsreader, particularly a Web-based one).

The updated version of ggSpamFilter.user.js that I have tested to work with 
Tampermonkey 4.1 in Chromium “51.0.2704.79 Built on 8.4, running on Debian 
stretch/sid (64-bit)” and other user scripts are now available at

<http://PointedEars.de/wsvn/JSX/trunk/Greasemonkey/>

-- 
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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#31080

On Thursday, August 4, 2016 at 10:07:34 PM UTC+5:30, Michael Haufe (TNO) wrote:

> if you set your local site with a different url, 

Sorry - what does this mean? How do I set the URL of the local site? The root directory for the site will be /var/www/html , where the HTML files will be uploaded (or, in this case, simply *created*), and then going to localhost in the browser will show me the site...? That's the way it works out-of-the-box in CentOS...... - you mean I can set a *URL* for the local site on top of that?? 
Does this mean poking about with /etc/hosts or something? Why would this be necessary?
(I know you said no LAMP questions, but really, I think this is relevant....)

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#31089

In article <9e25cd52-5192-4de7-ae84-76503af1c8fa@googlegroups.com>,
<bit-naughty@hotmail.com> wrote:

>On Thursday, August 4, 2016 at 10:07:34 PM UTC+5:30, Michael Haufe (TNO) wrote:
>
>> if you set your local site with a different url, 
>
>Sorry - what does this mean? How do I set the URL of the local site? The root
>directory for the site will be /var/www/html , where the HTML files will be
>uploaded (or, in this case, simply *created*), and then going to localhost in
>the browser will show me the site...? That's the way it works out-of-the-box
>in CentOS...... - you mean I can set a *URL* for the local site on top of
>that?? 
>Does this mean poking about with /etc/hosts or something? Why would this be
>necessary?
>(I know you said no LAMP questions, but really, I think this is relevant....)

Instead of your ajax request being made to
http://www.example.com/path/to/script you make it to
http://localhost/path/to/script

If you want to use another port than the default, you specify it as:

   http://localhost:xxxx/path/to/script

where xxxx is the portnumber to use. Then you have to make sure your
apache instance is using that port number

-- 
"The idea that Bill Gates has appeared like a knight in shining armour to
 lead all customers out of a mire of technological chaos neatly ignores 
 the fact that it was he who, by peddling second-rate technology, led them
 into it in the first place."                             - Douglas Adams

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#31088

In article <29ee462f-7cc5-4c7a-b9a2-ef1bbcbe371f@googlegroups.com>,
<bit-naughty@hotmail.com> wrote:

>If I have LAMP installed on my machine, on the *same* machine that I'm doing
>front end coding on, can I do AJAX coding on it, by connecting to localhost?
>Would there be any hitches?
>
>I'd probably be using CentOS, but maybe I'll try some other distros as
>well....?

Yes. My app does this all the time.

-- 
"People don't buy Microsoft for quality, they buy it for compatibility
with what Bob in accounting bought last year. Trace it back - they buy
Microsoft because the IBM Selectric didn't suck much" - P Seebach, afc

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#31096

Umm...hello? Something strange is going on, Google Groups tells me the message below mine has been deleted....??

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#31097

In article <466bba9f-b740-451c-99c5-36d6a2c7f471@googlegroups.com>,
<bit-naughty@hotmail.com> wrote:

>Umm...hello? Something strange is going on, Google Groups tells me the message
>below mine has been deleted....??

What is "google groups" and what does it have to do with this Usenet
newsgroup?

-- 
New Socialism consists essentially in being seen to have your heart in 
the right place whilst your head is in the clouds and your hand is in 
someone else's pocket.

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