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server script not returning response text AJAX
Old 09-01-2008, 02:47 PM server script not returning response text AJAX
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This script is returning an empty xmlHttp.responseText? ? ?
Code:
 
<?php
$conn = mysql_connect("xxx","xxx","xxx"); 
mysql_select_db("xxx",$conn);
$Title = $_GET["Title"];
if($Title)
 {
 $SQL = "Insert Into Categories Values (NULL,'".$Title."','Enabled')";
 mysql_query($SQL);
 }
$SQL = "Select * From Categories";
$result = mysql_query($SQL);
while($row = mysql_fetch_array($result))
 {
echo "    <tr>"; 
echo " <td><div class = 'style8' align = 'left'>{$row['Title']}</div></td>";
echo " <td><div class = 'style8' align = 'right'>{$row['Enable']}</div></td>";
echo "   </tr>";
 }
?>
I have even tried eliminating the databse operations and just placing the statement

Code:
 
echo "hello";
This is the client script:

Code:
 
function NewCat (Elem)
{
Init(); //creates xmlhttprequest object
var Input = prompt("Please enter title for new category");
xmlHttp.onreadystatechange=function()
{
if(xmlHttp.readyState==4)
{
document.getElementById(Elem).innerHTML = xmlHttp.responseText;
}
}
ReqStr = "NewCat.php?Title=" + Input;
xmlHttp.open("Get",ReqStr,true);
xmlHttp.send(null);
}
Last edited by Sleeping Troll; 09-01-2008 at 02:56 PM..
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Old 09-01-2008, 03:51 PM Re: server script not returning response text AJAX
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The script isn't complete.

You need to give us all the code ie a function called Init() is called within NewCat(). Is this available to the script?

Also I don't see where/how the ajax function NewCat() is being executed.
Last edited by maxxximus; 09-01-2008 at 03:54 PM..
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Old 09-01-2008, 07:56 PM Re: server script not returning response text AJAX
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The Init() function creates the xmlhttprequest object. NewCat is being called by an "onclick" event. I have tested the code and the request is being sent and the server is responding with "", curiously enough the database is not being updated... However when I simplify server script to:

<?php
echo "hello";
?>



I still get "" for response.
**** that's one tough bug! I have sprayed the crap out of it and it has not even slowed down! But the bug I have described is making my head hurt!!!
Last edited by Sleeping Troll; 09-01-2008 at 07:59 PM..
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Old 09-01-2008, 08:21 PM Re: server script not returning response text AJAX
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sending spaces in a GET request will fail as the first space will delimit the URI string. You HAVE to encode the URI.

ReqStr = "NewCat.php?Title=" + encodeURI(Input)
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Old 09-01-2008, 08:37 PM Re: server script not returning response text AJAX
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Will check that Chris, but I don't think I have sent spaces, however it could be an issue later.
thx.

Nope same thing...
Last edited by Sleeping Troll; 09-01-2008 at 08:39 PM..
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Old 09-01-2008, 08:38 PM Re: server script not returning response text AJAX
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Try this script and see what happens.

HTML Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script type="text/JavaScript">
function ajaxFunction()
{
 
      
      var b = "include"; 
     var a = prompt("Please enter title for new category");
     a= "NewCat.php?Title=" + a;

 
  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.XMLHTTP");
        }
      catch (e)
        {
        alert("Your browser does not support AJAX!");
        return false;
        }
      }
    }
    xmlHttp.onreadystatechange=function()
      {
          
          if(xmlHttp.readyState==1)
        {
       document.getElementById(b).innerHTML='<div align="center"><p>Loading, please wait ...</p></div>';
        }
      if(xmlHttp.readyState==4)
        {
       document.getElementById(b).innerHTML=xmlHttp.responseText;
        }
      }
    xmlHttp.open("GET",a,true);
    xmlHttp.send(null);
  }


</script>
</head>

<body ><form action="" method="get"><input name="title" type="button" id="title" onclick="ajaxFunction()" value="title" />
</form>
<div id="include"></div>
</body>
</html>
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Old 09-02-2008, 05:12 AM Re: server script not returning response text AJAX
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Thx for the magnanimous effort, maxxximus. Somehow my NewCat.php got wiped out, but that is a mixed blessing. Your script works with a simple echo script server side, mine does not. So at least I know problem is client side. One thing I noticed about myself as a programmer, I tend to be a bull in a china shop when it comes to reserved words. I changed "Input" to "Title" and my database updates. However the page is not updating, I know problem is clent side. (thx again maxxximus) But I really haven't a clue what it is! So here is the complete client side script. I have inspected the DOM and indeed the new content is not present.
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Admin Default</title> 
<?php
$conn = mysql_connect("xxx","xxx","xxx"); 
mysql_select_db("xxx",$conn);
?>
<script type="text/javascript">
<!--
var xmlHttp;
function Init()
 {
   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.XMLHTTP");
               }
               catch (e)
                 {
                  alert("Your browser does not support AJAX!");
                }
          }
       }
 }
 
function NewCat(Elem)
 {
  Init();
   var Title = prompt("Please enter title for new category");
  xmlHttp.onreadystatechange=function()
     {
    if(xmlHttp.readyState==4)
     {
     document.getElementById(Elem).innerHTML = xmlHttp.responseText;
     }
   }
  ReqStr = "NewCat.php?Title=" + encodeURI(Title);
  xmlHttp.open("Get",ReqStr,true);
  xmlHttp.send(null);
 }
//-->
</script>
<style type="text/css">
<!--
.style1 {
 font-family: "GrilledCheese BTN";
 font-size: large;
}
.style2 {
 font-family: "GrilledCheese BTN";
 font-size: x-small;
}
.style3 {font-family: "GrilledCheese BTN"}
a:hover {
 font-family: "GrilledCheese BTN";
 font-size: larger;
 color: #000000;
}
body {
 background-color: #FDF993;
}
a:link {
 color: #000000;
 text-decoration: none;
}
dl, dt, dd, ul, li {
margin: 0;
padding: 0;
list-style-type: none;
}
.style8 {font-family: "GrilledCheese BTN"; font-size: small; }
a:visited {
 color: #000000;
}
a:active {
 color: #000000;
}
-->
</style>
<body>
<table width="100%" border="0">
 <tr>
          <!-- Bumper -->
  <td>&nbsp;</td>
          <!-- Bumper -->
          <!-- Login Panel Start -->
  <td width="120" align="center" class="style3" id = "Message">
  <div align="center"><?php echo $Msg ?></div></td>
          <!-- Login Panel End -->
          <!-- Bumper -->
  <td>&nbsp;</td>
          <!-- Bumper -->
          <!-- Banner Panel Start -->
  <td id = "Banner" align="center" height="120">
   <div><img src="../Images/Bnnr.png" width="700" height="91"></div>
  </td>
          <!-- Banner Panel End -->
          <!-- Bumper -->
 
  <td>&nbsp;</td>
 
          <!-- Bumper -->
          <!-- Navigation Panel Start -->
  <td width="120" align="center" valign="middle" nowrap id = "Navigation">
   <div class = "style2">
     <a href = "default.php">Home</a><br>
     <a href = "FAQ.php">FAQ</a><br>
     <a href = "Contact.php">Contact Us</a><br>
     <a href = "About.php">About us</a><br>
     <a href = "Cart.php">My Cart</a><br>
   </div>
  </td>
          <!-- Navigation Panel End -->
 
          <!-- Bumper -->
  <td>&nbsp;</td>
          <!-- Bumper -->
 </tr>
</table>
<table width="100%"> 
 <tr>
          <!-- Left Panel Start -->
  <td width="200" colspan="4" align="center" valign="top" nowrap id = "Left_Panel">
   <div class = "style1">
    <div align="center">Categories</div>
    <div align="center"></div> 
   </div>  </td>
          <!-- Left Panel End -->
          <!-- Center Panel Start -->
  <td colspan="5" align="center" valign="top" id = "Center_Panel">
   <div class="style1">
    <div align="center">Templates</div>
    <div align="center">   </div>  </td>
          <!-- Center Panel End -->
 
          <!-- Right Panel Start -->
  <td width="400" align="center" valign="top" nowrap id = "Right_Panel">
   <div class="style1">Preview Image </div>  </td>
          <!-- Right Panel End -->
 </tr>
 <tr>
   <td align="center" valign="top" nowrap class="style8" id = "Left_Panel">&nbsp;</td>
  <td align="center" valign="top" class="style8" id = "Center_Panel"><div align="right">
   <div align="left">Title</div>
   </div></td>
  <td align="center" valign="top" class="style8" id = "Center_Panel"><div align="right">Status</div></td>
  <td align="center" valign="top" class="style8" id = "Center_Panel">&nbsp;</td>
  <td align="center" valign="top" nowrap class="style8" id = "Right_Panel">File Name </td>
  <td align="center" valign="top" nowrap class="style8" id = "Right_Panel">Text Fields </td>
  <td align="center" valign="top" nowrap class="style8" id = "Right_Panel">Categories</td>
  <td align="center" valign="top" nowrap class="style8" id = "Right_Panel">Photos</td>
  <td align="center" valign="top" nowrap class="style8" id = "Right_Panel">Enable</td>
 </tr>
 <tr>
  <td align="center" valign="top" nowrap id = "Left_Panel">&nbsp;</td>
  <td colspan="2" align="center" valign="top" nowrap id = "Left_Panel"><table id= "Categories" name= "Categories" width="100%" align = "center" border="0">
   <?php
$SQL = "Select * From Categories";
$result = mysql_query($SQL);
while($row = mysql_fetch_array($result))
{
 echo (" 
   <tr> 
    <td><div class = 'style8' align = 'left'>".$row['Title']."</div></td>
    <td><div class = 'style8' align = 'right'>".$row['Enable']."</div></td>
   </tr>
   ");
}
?>
  </table></td>
  <td align="center" valign="top" nowrap id = "Left_Panel">&nbsp;</td>
  <td colspan="5" align="center" valign="top" id = "Center_Panel">
<table id= 'Templates' width='100%' align = 'center' border='0'><?php
$SQL = "Select * From Templates";
$result = mysql_query($SQL);
while($row = mysql_fetch_array($result))
{
 echo (" 
   <tr> 
    <td><div class = 'style8' align = 'left'>".$row['FileName']."</div></td>
    <td><div class = 'style8' align = 'right'>".$row['TxtFldCnt']."</div></td>
    <td><div class = 'style8' align = 'left'>".$row['PhotoCnt']."</div></td>
    <td><div class = 'style8' align = 'left'>".$row['Categories']."</div></td>
    <td><div class = 'style8' align = 'right'>".$row['Enable']."</div></td>
   </tr>
   ");
}
?>
</table></td>
  <td align="center" valign="top" nowrap id = "Right_Panel">&nbsp;</td>
 </tr>
 <tr>
  <td align="center" valign="top" nowrap class="style3" id = "Left_Panel">&nbsp;</td>
  <td colspan="2" align="center" valign="top" nowrap class="style3" id = "Left_Panel"><a href = "#" id = "NewCat" name = "NewCat" onClick = "NewCat('Categories')">New Category</a></td>
  <td align="center" valign="top" nowrap class="style3" id = "Left_Panel">&nbsp;</td>
  <td colspan="5" align="center" valign="top" id = "Center_Panel">&nbsp;</td>
  <td align="center" valign="top" nowrap id = "Right_Panel">&nbsp;</td>
 </tr>
</table>
</body>
</html>
URL if you want to take a look, no critique please, under construction. http://trollnest.com/bragflags/Admin...on/default.php
Last edited by Sleeping Troll; 09-02-2008 at 07:05 AM..
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Old 09-02-2008, 10:32 AM Re: server script not returning response text AJAX
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Hello, Hello, Hello... Is there anybody there? there? there?
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