Auto-refresh Website Index Page Without Using Meta Refresh

Synewave · **Posted:** Sun Feb 27, 2011 10:45 am

Ooops, Sorry Dan, there was an error in that code I quoted. I've upated my post.

beteljuice · **Posted:** Sun Feb 27, 2011 3:06 pm

In a similar fashion, all your other JS created Hi / Lo, weather / wind icon decision coding needs to moved / modded into the ajax 'loop' :shock:

Welcome to the world of bespoke coding - to paraphrase Oscar Wilde "The pure and simple page is rarely pure and never simple" !

But you do feel so good when a little graphic changes or some text suddenly appears :clap:

captzero · **Posted:** Sun Feb 27, 2011 7:55 pm

Thanks Paul / Daj,
I can see some more lost hours in front of the screen coming up for me. :lol:

captzero · **Posted:** Thu Mar 03, 2011 12:41 pm

Thanks again Paul & Daj.

:clap:

The script works well and easy enough to get up and running. Paul, thanks for the tip about the trend arrows. I was able to use that info to get all my other bits to update as well. Its a bit clunky in Chrome (okay in IE and FF) when fetching the wind direction graphic etc, but I can live with that. :clap:

captzero · **Posted:** Sun Mar 06, 2011 9:16 am

Hi Guys,

I need some help with some conversions & calculations and the <span> tags.
Previously, I was running some js to convert and display wind speed km/h to knots (for fishing buddies) easily enough. The old script was:

<script type="text/javascript">
var speed = "<#wlatest>";
var speedknots = Math.abs(speed*0.54*10)/10;
document.write(speedknots.toFixed(1));
</script> kts

I have been able to get the do a similar thing using the realtimereader.js by using:

var spknots = rawdata[6];
$("#speedknots").html(Math.abs(spknots*0.54*10)/10);

and the span tag is <span id="speedknots"></span>

However, this will give 1.6 km/h as 0.8640000000000001 knots.

How am I able to display with 1 decimal point, ie, as 0.8 knots. Am I close or way off the mark here?

I have tried several variants but it usually breaks the javascript.

Thanks in advance.

Synewave · **Posted:** Sun Mar 06, 2011 10:49 am

captzero wrote:

Hi Guys,

I need some help with some conversions & calculations and the <span> tags.
Previously, I was running some js to convert and display wind speed km/h to knots (for fishing buddies) easily enough. The old script was:

<script type="text/javascript">
var speed = "<#wlatest>";
var speedknots = Math.abs(speed*0.54*10)/10;
document.write(speedknots.toFixed(1));
</script> kts

I have been able to get the do a similar thing using the realtimereader.js by using:

var spknots = rawdata[6];
$("#speedknots").html(Math.abs(spknots*0.54*10)/10);

and the span tag is <span id="speedknots"></span>

However, this will give 1.6 km/h as 0.8640000000000001 knots.

How am I able to display with 1 decimal point, ie, as 0.8 knots. Am I close or way off the mark here?

I have tried several variants but it usually breaks the javascript.

Thanks in advance.

Dan,

Based on the script you quoted above that worked, try this in the realtimereader.js

Code:

var spknots = rawdata[6];
var speedknots = Math.abs(spknots*0.54*10)/10;
var speedknots = speedknots.toFixed(1);
$("#speedknots").html(speedknots);

Untested, but logically should work based on your original.
The <span id="speedknots"></span> stays the same in your HTML.

captzero · **Posted:** Sun Mar 06, 2011 11:00 am

Synewave wrote:

Untested, but logically should work

Works like a dream. Thanks Paul.

I knew I had to add .toFixed(1) somewhere.

And, thanks for the quick reply too.

mcrossley · **Posted:** Sun Mar 06, 2011 1:03 pm

Why Math.abs() are you expecting it to go negative?

Math.round(spknots*0.54*10)/10

mcrossley · **Posted:** Sun Mar 06, 2011 1:37 pm

Second thoughts, as you are using .toFixed() - required for those pesky n.0 values - then all you need is:

var speedknots = rawdata[6]*0.54;
speedknots = speedknots.toFixed(1);
$("#speedknots").html(speedknots);

beteljuice · **Posted:** Sun Mar 06, 2011 2:05 pm

Or as a one-liner

$("#speedknots").html((rawdata[6]*054).toFixed(1));

:lol:

but not so easy on the mind or the eye :shock:

Andy · **Posted:** Fri Mar 18, 2011 6:51 pm

Synewave wrote:

It seems many want their index page to automatically refresh without having to press F5. Any many don't want to get into the realms of changing their site to use the PHP methods available in the forum.

Here is a simple way to achieve this using Javascript that will refresh the weather data on your index page automatically every 15 seconds. It works by reading the data from your realtime.txt file (providing you already have Cumulus set to upload that).

Paul,
Thanks - I had been after an auto update process.

rayauger · **Posted:** Tue Mar 22, 2011 5:36 pm

Hello everybody,

Hope someone can help me.

Installed Paul's autorefresh and did some modification but then sometime after the update I am getting garbage as shown on the attached picture. Then a manual refresh or if you wait for the next refresh, it will display OK.

Any idea what could be the problem?

if you want to see the page here is the link

http://pages.videotron.com/meteo/yvan

thanks for your help

Yvan

mcrossley · **Posted:** Tue Mar 22, 2011 5:39 pm

It looks like the fetch of the data actually got a Error 404 page rather than the data. I put some code in my autorefresh to check the contents of the returned data before trying to use in.

TgT · **Posted:** Sat Sep 03, 2011 12:55 am

Good script :clap:

What about some flashcolor for changed data? :oops:

mcrossley · **Posted:** Sat Sep 03, 2011 7:46 am

TgT wrote:

Good script :clap:

What about some flashcolor for changed data? :oops:

I have done that on my 'now' page. You need to store all the values, then on the next refresh compare new with old. If different set a 'newValue' style to change the colour. Then at the end of the update routine overwrite the 'old' values with the new and set a 'setTimout()' to call another function after say 10 seconds the clears the new value styles.

--sent from my phone

	It is currently Sun May 26, 2013 8:40 am
Please click here before posting. Help me to help you!
Useful Links: Cumulus FAQ • Enhancement requests • Wiki (documentation)
Please put your approximate location into your profile
Add your web site to the Cumulus user map
Vantage Pro2 users with firmware 3.00 should upgrade to fw 3.12 and Cumulus 1.9.4
Latest Cumulus release v1.9.3 (build 1059) - Feb 09 2013 Latest Cumulus beta v1.9.4 build 1078 - May 24 2013 --> Latest Cumulus Realtime v1.0.0.5 - Sep 05 2009

Sandaysoft

Auto-refresh Website Index Page Without Using Meta Refresh

Who is online