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RobertG

2007-Nov-17 18:13 UTC

Keep ajax respond data after request is finished

Hello,

  this must be something stupid but I can''t figure out how to keep
JSON data recevied from AJAX call after the request is finished, the
array comes out always empty. I must be doing some dump perlish
assumption or doing something stupid

var rows = [];
document.observe( "dom:loaded", function() {
	new Ajax.Request( ''/ajaxrsp.html'', { method:
''get'', onSuccess:
function( transport ) {
		rows = $A( transport.responseJSON );
		rows.each( function( row, i ) { alert( row + ''/'' + i ) } )
	}})
	alert( rows );
}

alert in the request body show the actual data but the second alert
returns empty. Do I have to deep-clone it by hand or what? Please
help. Thanks a lot.

Robert G
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Bastian Feder

2007-Nov-17 19:20 UTC

head link

Re: Keep ajax respond data after request is finished

Hi,
this is a very common question here ;o)
Just add ".bind(this)" to your annonymous function call.

onSuccess:> function( transport ) {
>                 rows = $A( transport.responseJSON );
>                 rows.each( function( row, i ) { alert( row +
''/'' + i ) } )
>         }.bind(this)})

hf
Bastian

On Nov 17, 2007 7:13 PM, RobertG
<robert.germic-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> Hello,
>
>   this must be something stupid but I can''t figure out how to keep
> JSON data recevied from AJAX call after the request is finished, the
> array comes out always empty. I must be doing some dump perlish
> assumption or doing something stupid
>
> var rows = [];
> document.observe( "dom:loaded", function() {
>         new Ajax.Request( ''/ajaxrsp.html'', { method:
''get'', onSuccess:
> function( transport ) {
>                 rows = $A( transport.responseJSON );
>                 rows.each( function( row, i ) { alert( row +
''/'' + i ) } )
>         }})
>         alert( rows );
> }
>
> alert in the request body show the actual data but the second alert
> returns empty. Do I have to deep-clone it by hand or what? Please
> help. Thanks a lot.
>
> Robert G
> >
>


-- 
--
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completely pointless.

Join the Greater IBM  Connection (http://www.xing.com/premiumgroup-6291.d26b7d)

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Bastian Feder

2007-Nov-17 19:22 UTC

head link

Re: Keep ajax respond data after request is finished

Hi,
sure I meant "rows" instead of "this". sry.

Bastian

On Nov 17, 2007 8:20 PM, Bastian Feder
<bastian.feder-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Hi,
> this is a very common question here ;o)
> Just add ".bind(this)" to your annonymous function call.
>
> onSuccess:
> > function( transport ) {
> >                 rows = $A( transport.responseJSON );
> >                 rows.each( function( row, i ) { alert( row +
''/'' + i ) } )
> >         }.bind(this)})
>
>
> hf
> Bastian
>
>
> On Nov 17, 2007 7:13 PM, RobertG
<robert.germic-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> > Hello,
> >
> >   this must be something stupid but I can''t figure out how to
keep
> > JSON data recevied from AJAX call after the request is finished, the
> > array comes out always empty. I must be doing some dump perlish
> > assumption or doing something stupid
> >
> > var rows = [];
> > document.observe( "dom:loaded", function() {
> >         new Ajax.Request( ''/ajaxrsp.html'', { method:
''get'', onSuccess:
> > function( transport ) {
> >                 rows = $A( transport.responseJSON );
> >                 rows.each( function( row, i ) { alert( row +
''/'' + i ) } )
> >         }})
> >         alert( rows );
> > }
> >
> > alert in the request body show the actual data but the second alert
> > returns empty. Do I have to deep-clone it by hand or what? Please
> > help. Thanks a lot.
> >
> > Robert G
> > > >
> >
>
>
>
> --
> --
> spread the word ... see  www.browsehappy.com ;o)
>
> Calvin: Weekends don''t count unless you spend them doing something
> completely pointless.
>
> Join the Greater IBM  Connection
(http://www.xing.com/premiumgroup-6291.d26b7d)
>


-- 
--
spread the word ... see  www.browsehappy.com ;o)

Calvin: Weekends don''t count unless you spend them doing something
completely pointless.

Join the Greater IBM  Connection (http://www.xing.com/premiumgroup-6291.d26b7d)

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RobertG

2007-Nov-17 23:45 UTC

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Re: Keep ajax respond data after request is finished

On Nov 17, 8:22 pm, "Bastian Feder"
<bastian.fe...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> sure I meant "rows" instead of "this". sry.
Thanks for your help, it doesn''t work. I''m just
half-understanding
what bind do, but I now think in my example I''ve just mis-understood
(or rather overlooked) that dom:loaded event is fired AFTER the rest
of the script is executed as in

		var rows;
		document.observe( "dom:loaded", function() {
			rows =
[{"first":"Robert","last":"G"},
{"first":"Honza","last":"K"}];
			alert( ''1: '' + Object.inspect(rows) );
		})
		alert( ''2: '' + Object.inspect(rows) );

Second alert is shown first and by that time rows variable is still
empty... Oh well... I should have simplified it sooner but I was
blinded by this cool Ajax thing... :-(
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developer-P5Ep+WoDybrQT0dZR+AlfA@public.gmane.org

2007-Nov-18 01:11 UTC

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Re: Keep ajax respond data after request is finished

Ajax.Request is doing an asynchronous call so the alert(rows) is run 
before the ajax request finishes.  You''ll either want to make the Ajax 
request synchronous or do all the logic that depends on the rows inside 
of the onSuccess function.

Trevan

RobertG wrote:> Hello,
> 
>   this must be something stupid but I can''t figure out how to keep
> JSON data recevied from AJAX call after the request is finished, the
> array comes out always empty. I must be doing some dump perlish
> assumption or doing something stupid
> 
> var rows = [];
> document.observe( "dom:loaded", function() {
> 	new Ajax.Request( ''/ajaxrsp.html'', { method:
''get'', onSuccess:
> function( transport ) {
> 		rows = $A( transport.responseJSON );
> 		rows.each( function( row, i ) { alert( row + ''/'' + i )
} )
> 	}})
> 	alert( rows );
> }
> 
> alert in the request body show the actual data but the second alert
> returns empty. Do I have to deep-clone it by hand or what? Please
> help. Thanks a lot.
> 
> Robert G
> > 

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Rails spinoffs - Nov 2007 - Keep ajax respond data after request is finished

Keep ajax respond data after request is finished

Re: Keep ajax respond data after request is finished

Re: Keep ajax respond data after request is finished

Re: Keep ajax respond data after request is finished

Re: Keep ajax respond data after request is finished