online / offline webtag for htm

Darknstormy · Post by **Darknstormy** » Sun 03 Jul 2011 11:53 am

Ok... since I'm completely dumb at code and its a little confusing.... have we got a final code that can be added once the new build comes out...

sorry

is there anything I need to change apart from online offline gif?

because its not working

Lyle

EDIT : sorry I see Steve has already done an update

:D

beteljuice · Post by **beteljuice** » Sun 03 Jul 2011 1:52 pm

Oops - the beteljuice always has headaches with coding time functions no matter what the language is !

Try the edited code now (V1.2)

PS. your output is in a <table> but NOT within <TR><TD>

B*gger! - forgot UTCdate

now (V1.3)

Darknstormy · Post by **Darknstormy** » Mon 04 Jul 2011 9:03 am

awww... i dont know what ive done wrong... mines just saying station offline and the image isnt coming up:(

beteljuice · Post by **beteljuice** » Mon 04 Jul 2011 10:18 am

You have still 'broken' the table, if you want it below your other sensors
then:

Code: Select all

<tr>
<td colspan="4" class="tableseparator_pressure"><div align="center">
<script type="text/javascript">
<!--
// for the image (when / where required)
document.write("<img src=\"" + status_pic + "\" alt=\"test\" title=\"" + status_txt + "\" />");
//for the text (when / where required)
document.write( " " + status_txt);
-->
</script>
</div></td>
</tr>

Note the o/p code has been rewritten, your image is rather large, so either resize it or 'force' a different size by adding at least a width attribute along the lines of:

Code: Select all

document.write("<img src=\"" + status_pic + "\" alt=\"test\" title=\"" + status_txt + "\" width=\"40\" />");

Darknstormy · Post by **Darknstormy** » Mon 04 Jul 2011 10:57 am

Sorry It's prob frustrating.. ok so Ive re-sized the pictures and they are working now...

but when you say I have 'broken' the table... what part of the code have I got in the wrong spot for that to happen.. Cheers sorry again

mcrossley · Post by **mcrossley** » Mon 04 Jul 2011 11:45 am

beteljuice, I still think this is wrong or over complicated.

The problem is the browser is using 'local' time somewhere in the world, we don't know where.
Cumulus is providing UTC time to get around this.

So we want to compare 'now':

Code: Select all

var now = new Date();

with the time Cumulus provides in UTC:

Code: Select all

var then = Date.UTC(<#timeUTC format=yyyy>, <#timeUTC format=mm>-1, <#timeUTC format="dd', 'hh', 'mm', 'ss">);

so:

Code: Select all

if (now - then < timetodie)  //simplified, could strictly use now.getTime()
  //we're online
else
  //we're offline

Or am I off track here?

beteljuice · Post by **beteljuice** » Mon 04 Jul 2011 12:53 pm

I might well be overdoing things, or even got my logic backward - as I said before I've always had problems with what is UTC and what doesn't need to be (for comparative purposes).

I certainly seem to have got something wrong as Darknstormys page is always showing off-line to me, but if I test the code locally it seems to work

As I see your code suggestion, 'now' is a browser local time object which you have left alone, but then you have converted 'then' which is already a UTC time to UTC (again) milliseconds.

Does it work ?

mcrossley · Post by **mcrossley** » Mon 04 Jul 2011 1:28 pm

My previous code is largely untested, but I think the Date object always stores the raw millisecond value in 'UTC'.
I did play around in the debugger and...

if you set...
var now = new Date();
var utc = Date.UTC(now.getUTCFullYear, now.getUTCMonth, [...etc including ms])

then...
now == utc --> true

Darknstormy · Post by **Darknstormy** » Tue 05 Jul 2011 1:58 am

Glad you guys know what your doing, can u guys post the new code complete, and ill test it tonight when I get home.

Cheers guys

mcrossley · Post by **mcrossley** » Tue 05 Jul 2011 10:00 am

If I get a chance I'll have a play around sometime today - I'd like to implement this myself

beteljuice · Post by **beteljuice** » Tue 05 Jul 2011 1:33 pm

It would seem Mark had it right and the beteljuice both applied the UTC to the wrong variable and effectively did it twice ! (I think)

So here is the revised code that seems to work (Unless someone proves different

)
In the <head> section of your xxxxT.htm

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<script type="text/javascript">
<!--
// Javascript Cumulus update checker - betejuice v2.0 July 2011
// set these variables to suit
var missed = 2; // Number of updates to miss before deciding "offline", MUST be > 1, fractions allowed (eg. 1.5)
var online_pic = "myimages/online.gif"; // location of ONline image
var online_txt = "Station ON-line"; // your ONline text
var offline_pic = "myimages/offline.gif"; // location of OFFline image
var offline_txt = "Station OFF-line"; // your OFFline text
// END user vars

var now = new Date();

var then_month = <#timeUTC format=mm> -1;
var then = Date.UTC(<#timeUTC format=yyyy>, then_month, <#timeUTC format="dd', 'hh', 'mm', 'ss">);
var timetodie = <#interval> * missed * 60000; // milliseconds per minute

if(now - then < timetodie){
	status_pic = online_pic;
	status_txt = online_txt;
} else {
	status_pic = offline_pic;
	status_txt = offline_txt;
}
-->
</script>

Then somewhere to suit in the <body> section:

Code: Select all

<script type="text/javascript">
<!--
// for the image (when / where required)
document.write("<img src=\"" + status_pic + "\" alt=\"" + status_txt + "\" title=\"" + status_txt + "\" />");
//for the text (when / where required)
document.write(status_txt);
-->
</script>

You may wish to put the output script(s) in between <span> .. </span> to enable 'formatting' via CSS.

If it works

Kudos to Mark for proving that the beteljuice still has a long misunderstanding of comparative time conversions

Darknstormy · Post by **Darknstormy** » Tue 05 Jul 2011 9:32 pm

Cheers guys, I tried mcrossley last night that he sent me and it worked but ive stuffed up my style so ill need to edit it tonight and put it where u said. Oops thanks again.

GTB · Post by **GTB** » Wed 06 Jul 2011 4:09 am

yes well - that works fine beteljuice

thank you very much

geoff

Darknstormy · Post by **Darknstormy** » Thu 07 Jul 2011 10:50 am

Thanks heaps guys, I have it all up and running now, not once has it failed

Cheers

Ned · Post by **Ned** » Sat 09 Jul 2011 11:55 am

And another vote of thanks from me

Very nice and just what my site needed when it nods off every night....

Cumulus Support

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