[SOLVED] Ajax function not returning proper value.

[rekha]

Hi

 

I am having a customer list page.I have a delete button using anchor tag.If I want to delete a customer an alert should come and if the customer is having a pending invoice then one more alert should come.I have written this using ajax page by getting customer id.

 

function Isconfirm(id)			
{
    var  aid          = id;
    var  http_request = false;
    var s;
    if (window.XMLHttpRequest)  // For Mozilla, Safari,...
        http_request = new XMLHttpRequest();
    else if (window.ActiveXObject)  // For IE
    {
      try
      {
           http_request = new ActiveXObject("Msxml2.XMLHTTP");
      }
      catch (e)
      {
        try {
             http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
      }
    }
    if (!http_request)
    {
      alert('Giving up  Cannot create an XMLHTTP instance)');
      return false;
    }
    
    http_request.onreadystatechange = function() {s=alertContents(http_request);

};
    http_request.open('GET', "./getcusid.php?id="+aid, true);
    http_request.send(null);
  	 if(s === false)
{
alert("not entered");
return false;
}
else
{
return true;
}

}
function alertContents(http_request)
{
  if (http_request.readyState == 4)
  {
    if (http_request.status == 200)
    {
      var tid = http_request.responseText;
var res = confirm('Are you Sure you want to delete this customer?');
    if(res && tid!=0)
  var res1 = confirm('The selected customer has a non-zero balance.Deleting this customer will cause an adjusting transaction to be created.Is this Ok?');
     else 
    	return false;
   if (res1)
       return true;
else 
return false;
}
else
    alert('There was a problem with the request.');
}
}

 

The getcusid.php page returns the value of tid;The above ajax code is  returning true  value if ok or cancel button is clicked.

 

Please Help............

 

[priti]

Hi

 

I am having a customer list page.I have a delete button using anchor tag.If I want to delete a customer an alert should come and if the customer is having a pending invoice then one more alert should come.I have written this using ajax page by getting customer id.

 

function Isconfirm(id)			
{
    var  aid          = id;
    var  http_request = false;
    var s;
    if (window.XMLHttpRequest)  // For Mozilla, Safari,...
        http_request = new XMLHttpRequest();
    else if (window.ActiveXObject)  // For IE
    {
      try
      {
           http_request = new ActiveXObject("Msxml2.XMLHTTP");
      }
      catch (e)
      {
        try {
             http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
      }
    }
    if (!http_request)
    {
      alert('Giving up  Cannot create an XMLHTTP instance)');
      return false;
    }
    
    http_request.onreadystatechange = function() {s=alertContents(http_request);

};
    http_request.open('GET', "./getcusid.php?id="+aid, true);
    http_request.send(null);
  	 if(s === false)
{
alert("not entered");
return false;
}
else
{
return true;
}

}
function alertContents(http_request)
{
  if (http_request.readyState == 4)
  {
    if (http_request.status == 200)
    {
      var tid = http_request.responseText;
var res = confirm('Are you Sure you want to delete this customer?');
    if(res && tid!=0)
  var res1 = confirm('The selected customer has a non-zero balance.Deleting this customer will cause an adjusting transaction to be created.Is this Ok?');
     else 
    	return false;
   if (res1)
       return true;
else 
return false;
}
else
    alert('There was a problem with the request.');
}
}

 

The getcusid.php page returns the value of tid;The above ajax code is  returning true  value if ok or cancel button is clicked.

 

Please Help............

 

 

Hello rekha,

 

Its simple if your print variable before

if(s==false) it will print 'undefined' .

you have defined var s in the function but it is initialsed in other funtion either you make s global  in this script or edit your script as follow

  http_request.onreadystatechange = function() {s=alertContents(http_request);

if(s === false)

{

alert("not entered");

return false;

}

else

{

alert('return ture');

return true;

}

It work gr8 in both way

hope you have good time ahead in coding

 

regards

[rekha]

Hi

 

Thanks for your reply priti.

 

I had tried the code suggested by you.But it is still giving undefined value.I want the function isconfirm(id) to return either true or false.

 

Please help.....

[priti]

Hello rekha,

 

In start of script try to declare variable S make it global through out the javascript.

 

regards,

[rekha]

Hi priti

 

I have solved the issue yesterday by using javascript window.location function.

 

Thanks for your reply.

 

Regards

Rekha