PHP problem with include (containing AJAX) function

I have written few pages but facing problem. Pages are running individually ok, but from home page is not working.

Total 7 pages are used: 5 .php and 2 .js

My pages are
1. customer.php (home page)
2. getcustomer.php
3. getuser.php
4. new_customer.php
5. old_customer.php
and
6. selectuser.js
7. selectcustomer.js

5 php pages are attached.

2 .js files are below:
## //selectuser.js

var xmlHttp;
function showUser(str)
{ 
    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null)
     {
         alert ("Browser does not support HTTP Request");
         return;
     }
    var url="getuser.php";
    url=url+"?q="+str;
    url=url+"&sid="+Math.random();
    xmlHttp.onreadystatechange=stateChanged;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
}
function stateChanged() 
{ 
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
    {
        document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
    }
}
function GetXmlHttpObject()
{
    var xmlHttp=null;
    try
    {
        // Firefox, Opera 8.0+, Safari
        xmlHttp=new XMLHttpRequest();
    }
    catch (e)
    {
         //Internet Explorer
         try
         {
            xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
         }
         catch (e)
         {
            xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
         }
    }
    return xmlHttp;
}

Code (markup):

## //selectcustomer.js

var xmlHttp;
function showCustomer(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 }
var url="getcustomer.php";
url=url+"?q="+str;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged; 
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}
function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("txtCustomer").innerHTML=xmlHttp.responseText;
 } 
}
function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}

Code (markup):

-----------------------------------------------
Problem: When I click old customer from customer.php, then it is showing Customer No and when I put 1 or 2 it is showing nothing.

But, if I run getuser.php like getuser.php?q=1
then, it is showing correctly.

I have found nothing wrong, because from getuser.php code is OK.

Problem is, from customer.php customer no is not working. Can I get any suggestion?

 

The values of the radio buttons are 0 (new customer) and 1 (old customer) but getcustomer.php is testing for values 1 and 2 while getuser.php tests for 0 and 1 ...

 

No, this is not problem.
From customer.php : 0 for new_customer.php and 1 for old_customer.php
and
old_customer.php is calling the page getcustomer.php which contains 1 and 2 so that getcustomer returns 1/2 to old_customer.php

If I run old_customer.php or from getuser.php then code is running.
But, if I call old_customer.php from customer.php then old_customer.php can't execute code from getcustomer.php

 

OK, see what you're trying to do now ...

The javascript in the ajax response is not being evaluated, basically the response is interpreted as a string therefore showCustomer is never called ...

Move <script src="selectcustomer.js"></script> to customer.php

Edit selectcustomer.js
rename stateChanged() function to CustomerStateChanged() to avoid conflict
change showCustomer() function so that onreadystatechange calls renamed function : xmlHttp.onreadystatechange=CustomerStateChanged;
delete the GetXmlHttpObject() function from selectcustomer.js to avoid being conflict

You could move all the js to a single file and maybe look at a framework such as prototype or jquery which provide better ajax handlers

 

Thank you. Problem solved according to change you mention.
I have also merged .js files into a single file and calling from customer.php only. Code is quite OK.
I have donwloaded protype as well as jquery, but it seems to me that they need time to adopt. So far thanks. Rep added.