[tpm] [OT] Javascript to watch for certain KW from a web page
Mark Jubenville
ioncache at gmail.com
Wed Oct 10 08:40:48 PDT 2012
I'd use setInerval instead of setTimeout though:
var page_check;
var nMilliseconds = 60*1000; // frequency of server check in milliseconds
var checkServerStatus = function () {
$.ajax({ url: "/path/to/your/log/file/script" }).done(function
(jqXHR, textStatus) {
if (/a regexp matching text in your log
file/.test(jqXHR.responseText)){
$.facybox("The text you wish the user to see in the popup
dialogue.");
clearInterval(page_check);
}
});
};
page_check = setInterval( checkServerStatus, nMilliseconds );
On 2012-10-10 11:27 AM, Antonio Sun wrote:
> Thanks a lot Shaun.
>
> That sure will pave my way to the right direction.
> I'll start playing.
>
> Thanks everyone!
>
> On Wed, Oct 10, 2012 at 10:27 AM, Shaun Fryer <sfryer at sourcery.ca
> <mailto:sfryer at sourcery.ca>> wrote:
>
> Hi Antonio,
>
> That makes sense. Unfortunately it's a little beyond the scope of a
> simple email to provide a complete solution for your situation.
> However, you might try something like the following.
>
> You'll need two things. #1. an ajax function of some kind. Given that
> you aren't interested in learning JS, I'd recommend using a
> cross-browser abstraction library which has an ajax method, such as
> jQuery. #2. You'll need a popup dialogue of some kind. There are
> plenty to choose from. For the purposes of providing an example, I've
> [arbitrarily] chosen the facybox jQuery plugin. I have no direct
> experience with it, but the API seems simple enough, so it should work
> fine.
>
> Add a script tag including the jQuery library, followed by one for the
> plugin for your popup ( http://bitbonsai.com/facybox/ ). Now in a
> separate script tag below this, add code similar to that below
> (modified accordingly).
>
> var nMilliseconds = 60*1000; // frequency of server check in
> milliseconds
> var checkServerStatus = function () {
> $.ajax({ url: "/path/to/your/log/file/script" }).done(function
> (jqXHR, textStatus) {
> if (/a regexp matching text in your log
> file/.test(jqXHR.responseText))
> $.facybox("The text you wish the user to see in the popup
> dialogue.");
> else setTimeout( checkServerStatus, nMilliseconds );
> });
> };
> setTimeout( checkServerStatus, nMilliseconds );
>
> The above is just pseudo-code, but it *should* work with very little
> modification, assuming you're using the indicated JS libraries.
>
> Hope this helps.
> --
> Shaun Fryer
> ----------------------------------------------------------
> perl -e 'print chr for map{$_+=22}($ARGV[0])=~/(\d\d)/g' \
> 52959394107588899482799210587992861082757785799222
> ----------------------------------------------------------
>
>
> On Wed, Oct 10, 2012 at 9:51 AM, Antonio Sun
> <antoniosun at lavabit.com <mailto:antoniosun at lavabit.com>> wrote:
> > Hi, thanks a lot for your offer Shaun.
> >
> > That was actually what I thought the solution to be. Now let's
> forget what I
> > said and focus on what I need to accomplish.
> >
> > Yes, I totally control the page content. The situation is,
> >
> > I am designing a web portal that can launch back-end server side
> processes.
> > The problem is that the process can finish in seconds, or it
> might need
> > hours to finish, depending how much work the process has. So my
> design is to
> > spawn a sub process, and capture all its outputs to a log text
> file, then
> > return immediately to the user, in a web notice page saying,
> your job is
> > queued; here is the log url; please check manually if is
> finished or not.
> >
> > But my all my fellow coworkers said they don't want to check
> themselves.
> > Instead, they want my web portal to check for them. I couldn't
> think of any
> > solution from the server side to capture the end of the sub
> process, then
> > informed the already submitted web notice page. Hence, I'm
> turning to the
> > javascript front-end for solutions. Because I have zero knowledge of
> > Javascript, it might not be feasible at all. But I know the best
> solution is
> > that if I can have a desktop notification mechanism just like
> gmail does,
> > that should solve the problem, because my sub process control
> task does know
> > when the sub process ends, and write a specific ending tag to
> the end of the
> > log file, which is what I was planning to watch/search for.
> Every page of my
> > portal does include a standard master template (except the log
> text file),
> > so if I can send a signal at the end of my sub process and
> capture that by
> > the master template, then pop up a javascript window, that will
> do as well.
> >
> > Sorry for the lengthy gibberish, hope that you can figure
> something out from
> > it.
> >
> > Thanks
> >
> > On Wed, Oct 10, 2012 at 3:01 AM, Shaun Fryer <sfryer at sourcery.ca
> <mailto:sfryer at sourcery.ca>> wrote:
> >>
> >> Hi Antonio,
> >>
> >> I might be able to help you, but first I need to know a bit more
> >> detail about what you're trying to do. When you say watch for
> certain
> >> keywords from a webpage, what do you mean exactly? If you mean
> >> searching through a static html document looking for a give word or
> >> words, that's fairly trivial. However, if you can add javascript to
> >> the page in question, then you probably control the page, and
> >> therefore should already know it's content. So question is, why
> would
> >> you need front-end code in JavaScript to do it? If you mean
> doing an
> >> HTTP request from within a web-page, or even a Cross Origin
> request,
> >> in order to receive info from a 3rd-party website, then things
> could
> >> become considerably more complicated.
> >>
> >> Cheers,
> >> --
> >> Shaun Fryer
> >> ----------------------------------------------------------
> >> perl -e 'print chr for map{$_+=22}($ARGV[0])=~/(\d\d)/g' \
> >> 52959394107588899482799210587992861082757785799222
> >> ----------------------------------------------------------
> >>
> >>
> >> On Tue, Oct 9, 2012 at 5:48 PM, Antonio Sun
> <antoniosun at lavabit.com <mailto:antoniosun at lavabit.com>>
> >> wrote:
> >> > Hi,
> >> >
> >> > I know it's kind of OT, but since we have a lot of web
> experts here, let
> >> > me
> >> > try my luck here first.
> >> >
> >> > I have zero knowledge of Javascript, I'm wondering if you
> could give me
> >> > a
> >> > big favor to show me how to watch for certain keyword from a
> web page
> >> > using
> >> > Javascript.
> >> >
> >> > Basically, I have a slow updating web page, and I need a
> client side
> >> > Javascript to watch for a specific keyword in that page and
> pop up an
> >> > window
> >> > if the keyword is found.
> >> >
> >> > As I have zero knowledge of Javascript, I hope that your
> answer is as
> >> > complete as possible.
> >> >
> >> > Thanks a lot in advance
> >> >
> >> > Antonio
> >> >
> >> >
> >> > _______________________________________________
> >> > toronto-pm mailing list
> >> > toronto-pm at pm.org <mailto:toronto-pm at pm.org>
> >> > http://mail.pm.org/mailman/listinfo/toronto-pm
> >> >
> >
> >
>
>
>
>
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--
Mark Jubenville | ioncache at gmail.com
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