pass both variables($q1 and value of select) to js

[kkshansid]

i want to pass both variables($q1 and value of select) from this php page to java script so that i can get both variables in second php file

srt.php

<script type="text/javascript" src="st.js"></script>
<?php
$q1=$_GET["q1"];
 
require("conn.php");
 
$sql="SELECT distinct(".$q1.")FROM inst";
//echo $sql;
//exit();
$result = mysql_query($sql);
 
?>
  <input type="hidden" name="q1">
<p>
  <select name="users" onchange="showUser(this.value)">
    <?php 
while($row = mysql_fetch_array($result))
  {
  ?>
    <option value="<?php echo $row[0]; ?>"><?php echo $row[0]; ?></option>
    <?php   }?>
  </select>
  <?php 
//mysql_close($con);?>

i want to pass both variables($q1 and value of select) from this php page to java script so that i can get both variables in second php file


st.js

var xmlhttp;
 
function showUser(str)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var url="display.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)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
 
function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}

display.php
$q1=$_GET["q1"];
$q=$_GET["q"];

kindly help me in doing that

[acoder]

The select value you already have. To pass q1, you will need to first use PHP to generate JavaScript code. As an example:

<script type="text/javascript">
<?php
    echo "var q1 = '".$q1."';";
?>
</script>

Of course, you could improve that. Once you have the value in JavaScript, you can pass it to display.php quite easily like "q".