Just an FYI for anyone that may want to do a synchronous call to ajax using
ZXML or some other tool.
It's pretty simple, actually, and works great for checking tables for
existence etc.
(and you don't need global variables.)
Make the response pretty small and don't do too much, so it doesn't have to
wait too long.
I think it will timeout after 2 minutes.
With mine, I can't even tell it's waiting.
Create another function. I called mine callSAjax.
(Copy the callAjax to callSAjax).
Change the open from
name.open("GET", url, true);
name.open("GET", url, false);
Get rid of the name.onreadystatechange handler block
Add (as the last line of the function after name.send(null)):
return name.responseText;
You do not need a call back function for this.
Here is a reference link:
http://www.hunlock.com/blogs/Snippets:_Synchronous_AJAX
Here is an example:
DelMsg = callSAjax(url);
Hope this helps someone else, it really helped me!
(Thanks again Walden for your suggestion.)
Craig
-----Original Message-----
From: web400-bounces@xxxxxxxxxxxx [mailto:web400-bounces@xxxxxxxxxxxx] On
Behalf Of Craig Jacobsen
Sent: Tuesday, July 14, 2009 12:54 PM
To: 'Web Enabling the AS400 / iSeries'
Subject: Re: [WEB400] Waiting for Ajax call to fill global variable
Thank you Walden, for your input.
I'm using zxml. I downloaded an update from extjs.com.
I'll go to their site to see if I can make it sync.
If not, rather than putting up the alert msg, I'm thinking I can loop until
DelMsg has data.
Thanks everyone, I always learn something from this group.
Craig
-----Original Message-----
From: web400-bounces@xxxxxxxxxxxx [mailto:web400-bounces@xxxxxxxxxxxx] On
Behalf Of Walden H. Leverich
Sent: Tuesday, July 14, 2009 12:31 PM
To: Web Enabling the AS400 / iSeries
Subject: Re: [WEB400] Waiting for Ajax call to fill global variable
If I'm reading this correctly the async-ness of the callAjax method is
messing you up. You're expecting the DelMsg variable to be populated when
you return from the call to callAjax, but it won't be. For the code to work
the way you have it coded you need to make that a sync call.
That shouldn't be a lot of code changes, where's the callAjax function come
from? I'll bet you can pass a parm that says to make the call sync.
-Walden
--
Walden H Leverich III
Tech Software
(516) 627-3800 x3051
WaldenL@xxxxxxxxxxxxxxx
http://www.TechSoftInc.com
Quiquid latine dictum sit altum viditur.
(Whatever is said in Latin seems profound.)
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