AJAX Woes - XML HTTP Request not returning a value

[salvador]

I'm trying to create a function to return some values from a php
script. The php script is returning the correct values if called from
a browser window. However, the function that I'm using never appears
to pass the condition 'if(xmlHttp.rea dyState==4)'.

Can anyone see where I'm going wrong, or alternately, offer better
(read:working) solution?

function ajaxFunction(qs ) {
//document.getEle mentById("coord s").innerHTM L = qs;
// check to see that value is being passed - WORKS
var xmlHttp;
try
{
// Firefox, Opera 8.0+, Safari
xmlHttp=new XMLHttpRequest( );
}
catch (e)
{
// Internet Explorer
try
{
xmlHttp=new ActiveXObject(" Msxml2.XMLHTTP" );
}
catch (e)
{
try
{
xmlHttp=new ActiveXObject(" Microsoft.XMLHT TP");
}
catch (e)
{
alert("Your browser does not support AJAX!");
return false;
}
}
}
url = url + qs;
//document.getEle mentById("coord s").innerHTM L= url;
// verify that URL is property constructed - WORKS
xmlHttp.onready statechange=fun ction()
{
if(xmlHttp.read yState==4)
{
var working=xmlHttp .responseText;
// verify that a value is getting returned as text - FAILS
document.getEle mentById("coord s").innerHTML=w orking;
}
http.open("GET" , url, true);
xmlHttp.send(nu ll);
}
}

[Martin Honnen]

salvador wrote:

xmlHttp.onready statechange=fun ction()
{
if(xmlHttp.read yState==4)
{
var working=xmlHttp .responseText;
// verify that a value is getting returned as text - FAILS
document.getEle mentById("coord s").innerHTML=w orking;
}
http.open("GET" , url, true);
xmlHttp.send(nu ll);
}
}

Move the open and send call out of the onreadystatecha nge handler

if(xmlHttp.read yState==4)
{
var working=xmlHttp .responseText;
// verify that a value is getting returned as text - FAILS
document.getEle mentById("coord s").innerHTML=w orking;
}
http.open("GET" , url, true);
xmlHttp.send(nu ll);

--

Martin Honnen
http://JavaScript.FAQTs.com/

[salvador]

On Feb 22, 7:13 am, Martin Honnen <mahotr...@yaho o.dewrote:

salvador wrote:

xmlHttp.onready statechange=fun ction()
{
if(xmlHttp.read yState==4)
{
var working=xmlHttp .responseText;
// verify that a value is getting returned as text - FAILS
document.getEle mentById("coord s").innerHTML=w orking;
}
http.open("GET" , url, true);
xmlHttp.send(nu ll);
}
}

Move the open and send call out of the onreadystatecha nge handler

if(xmlHttp.read yState==4)
{
var working=xmlHttp .responseText;
// verify that a value is getting returned as text - FAILS
document.getEle mentById("coord s").innerHTML=w orking;
}
http.open("GET" , url, true);
xmlHttp.send(nu ll);

--

Martin Honnen
http://JavaScript.FAQTs.com/

Hey Martin,

Thanks for the suggestion. Apparently, not what the problem was, but
I'll keep poking at it.

-Sal

[VK]

On Feb 22, 6:03 pm, "salvador" <spera...@progr essivetrail.org wrote:

I'm trying to create a function to return some values from a php
script. The php script is returning the correct values if called from
a browser window. However, the function that I'm using never appears
to pass the condition 'if(xmlHttp.rea dyState==4)'.

Can anyone see where I'm going wrong,

As Martin Honnen pointed out, you script is never executed: remove
open and send out of onreadystatecha nge handler and place them in the
same block where you create XHR.

or alternately, offer better (read:working) solution?

AjaxRequest by Matt Kruse <http://www.ajaxtoolbox .com>

[salvador]

On Feb 22, 12:44 pm, "VK" <schools_r...@y ahoo.comwrote:

On Feb 22, 6:03 pm, "salvador" <spera...@progr essivetrail.org wrote:

I'm trying to create a function to return some values from a php
script. The php script is returning the correct values if called from
a browser window. However, the function that I'm using never appears
to pass the condition 'if(xmlHttp.rea dyState==4)'.

Can anyone see where I'm going wrong,

As Martin Honnen pointed out, you script is never executed: remove
open and send out of onreadystatecha nge handler and place them in the
same block where you create XHR.

Yes. That was a problem with the script. However, it was not the
primary problem that I am encountering. Even using the library that
you recommended below, I cannot get an XHR request to evaluate true.

See for yourself:

http://oregonhomefinder.net/test/

>

or alternately, offer better (read:working) solution?

AjaxRequest by Matt Kruse <http://www.ajaxtoolbox .com>

[salvador]

On Feb 22, 2:35 pm, "salvador" <spera...@progr essivetrail.org wrote:

On Feb 22, 12:44 pm, "VK" <schools_r...@y ahoo.comwrote:

On Feb 22, 6:03 pm, "salvador" <spera...@progr essivetrail.org wrote:

I'm trying to create a function to return some values from a php
script. The php script is returning the correct values if called from
a browser window. However, the function that I'm using never appears
to pass the condition 'if(xmlHttp.rea dyState==4)'.

Can anyone see where I'm going wrong,

As Martin Honnen pointed out, you script is never executed: remove
open and send out of onreadystatecha nge handler and place them in the
same block where you create XHR.

Yes. That was a problem with the script. However, it was not the
primary problem that I am encountering. Even using the library that
you recommended below, I cannot get an XHR request to evaluate true.

See for yourself:

http://oregonhomefinder.net/test/

or alternately, offer better (read:working) solution?

AjaxRequest by Matt Kruse <http://www.ajaxtoolbox .com>

The problem appears to be that the result never gets to a requestReady
state of 4. The transaction appears to be working but always stops at
3.

Why would this be?