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我有一段代码在 Google Chrome、Firefox 上运行良好，但在 IE 版本 8 上不起作用，request.responseXML 在 Internet Explorer 上返回空。

我的html表单：

 <?php
 $content='<html> 
 <head>
 <title>Client</title>
 <script type="text/javascript" src="ajax.js"> </script>
 <script type="text/javascript" src="existentClient.js"> </script>
 </head>
 <body >
 <form id="existent-client">
 Compagnie  : 
 <select name="companyname" id="companyname"      onchange="deleteOption();getCustomerInfo()">
 <option selected="selected">
 Select
 </option>';
        include './Connector/connect.php';
        $sqlaffichcompany= mysql_query("SELECT DISTINCT companyname FROM company ORDER BY companyname ASC" ) or die(mysql_error());
            while($fetchaffichcompany= mysql_fetch_array($sqlaffichcompany))
                    {
                        $content.='<option>';
                           $content.=$fetchaffichcompany['companyname']; 
                        $content.='</option>';
                    }   
        mysql_close();
$content.='</select>
E-mail  : 
<select name="mail" id="mail" onchange="">
<option  selected="selected">
Select
</option>
</select>
</form>
</body>
</html>';
echo $content;
?>

我的 ajax.js 文件：

var request = null;
try {
request = new XMLHttpRequest();
} catch (trymicrosoft) {
try {
request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (othermicrosoft) {
try {
  request = new ActiveXObject("Microsoft.XMLHTTP");
}  
  catch (failed) {
  request = null;
}
}
}

if (request == null)
alert("Error creating request object!");

我的javascript文件existentClient.js：

function deleteOption()
{
//alert( "1" );
var listbox   = document.getElementById( "mail" );
var lastIndex = listbox.options.length-1;

if ( lastIndex < 0 )
 return;

 listbox.remove( lastIndex );
 //alert( "2" );
}

function getCustomerInfo() {
var client = document.getElementById("companyname").value;
var url = "lookupClient.php?client=" +
        escape(client);
request.open("GET", url, true);
request.onreadystatechange = updateClient;
request.send(null);
}

function updateClient() {
if (request.readyState == 4) {
if (request.status == 200) {
deleteOption();
  /* Get the response from the server */
    var Doc = request.responseXML;
    var x = Doc.getElementsByTagName("option");
for (i=0;i<x.length;i++)
{ 

  /* Update the HTML web form */
        var listbox = document.getElementById( "mail" );
        var lastIndex = listbox.options.length-1;
        var newOption = document.createElement( "option" );
        newOption.innerHTML = x[i].firstChild.nodeValue;
        newOption.value = x[i].firstChild.nodeValue;

        try
        {
 listbox.options.add(newOption, lastIndex);  // standards compliant; doesn't work in IE  
        }
        catch (ex) 
        { 
            listbox.add( newOption, lastIndex); // IE only 
            alert( "In addOption(): " + ex ); 
        }         
    }

 } else
  alert("Error! Request status is " + request.status);
 }
 }

我的 php 文件包含 XML 部分：

<?php
$companyname=$_REQUEST['client'];
        include './Connector/connect.php';
        $sqlfindcompanyid=mysql_query("SELECT DISTINCT compid FROM company     WHERE companyname='$companyname' " ) or die(mysql_error());
        while ($fetchffindcompanyid=mysql_fetch_array($sqlfindcompanyid)) 
        {
         $companyid=$fetchffindcompanyid['compid'];
        }
        $sqlaffichclientid=mysql_query("SELECT DISTINCT mail FROM client     WHERE compid='$companyid' ORDER BY mail ASC" ) or die(mysql_error());


header("Content-Type: application/xml");


?>
<?xml version="1.0" encoding="iso-8859-1"?> 
<select>
<?php
            while($fetchaffichclientid=     mysql_fetch_array($sqlaffichclientid)) {
                        $mail = $fetchaffichclientid['mail'];
                ?><option><?php echo $mail; ?></option><?php
            }
?>
</select>
<?php
mysql_close();
?>

有什么帮助吗？？？

4

0 回答 0