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POHow to get around a 'NS_ERROR_ILLEGAL_VALUE' error using Ajax?
 

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  1. POHow to get around a 'NS_ERROR_ILLEGAL_VALUE' error using Ajax?
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    <p>Im just writing a small Ajax framework for re-usability in small projects and i've hit a problem. Basically i get a '<code>NS_ERROR_ILLEGAL_VALUE</code>' error while sending the request and i've no idea what is happening.</p> <p>The HTML Page (trimmed but shows the error)</p> <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt; &lt;title&gt;Ajax Test&lt;/title&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8" /&gt; &lt;script type="text/javascript"&gt; var COMPLETE = 4; var OK = 200; function GetXMLHttpRequestObject() { var XMLHttpRequestObject = false; if(window.XMLHttpRequest) { if(typeof XMLHttpRequest != 'undefined') { try { XMLHttpRequestObject = new XMLHttpRequest(); } catch (e) { XMLHttpRequestObject = false; } } } else if (window.ActiveXObject) { try { XMLHttpRequestObject = new ActiveXObject('Msxml2.XMLHTTP'); } catch (e) { try { XMLHttpRequestObject = new ActiveXObject('Microsoft.XMLHTTP'); } catch (e) { XMLHttpRequestObject = false; } } } else { XMLHttpRequestObject = false; } return XMLHttpRequestObject; } //The Main Ajax Object function AjaxRequest(p_RequestMethod, p_DestinationURL) { this.XMLHttpRequestObject = GetXMLHttpRequestObject(); this.RequestedMethod = p_RequestMethod; this.DestinationURL = p_DestinationURL; this.XMLHttpRequestObject.open(this.RequestMethod, this.DestinationURL); this.OnStateChange = function(Callback) { this.XMLHttpRequestObject.onreadystatechange = Callback; } this.Send = function(p_Content) { this.XMLHttpRequestObject.send(p_Content); } this.GetState() { return this.XMLHttpRequestObject.readyState; } this.GetResponseText = function() { return this.XMLHttpRequestObject.responseText; } this.GetResponseStatus = function() { return this.XMLHttpRequestObject.status; } this.GetResponseStatusText = function() { return this.XMLHttpRequestObject.statusText; } } var Request; function GetData() { Request = new AjaxRequest('POST', 'http://www.kalekold.net/ajax/Ajax.php'); Request.OnStateChange = StateChange; Request.Send(); } function StateChange() { window.alert("State: " + Request.GetState()); window.alert("Response: " + Request.GetResponseStatus()); window.alert("Response Text: " + Request.GetResponseStatusText()); if(Request.GetState() == COMPLETE &amp;&amp; Request.GetResponseStatus() == OK) { Result = Request.GetResponseText(); window.alert(Result); } } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form&gt; &lt;textarea name="TextArea" rows="10" cols="80"&gt;&lt;/textarea&gt;&lt;br /&gt; &lt;input type="button" value="Load" onClick="GetData();"&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>The PHP File:</p> <pre><code>&lt;?php $XML = &lt;&lt;&lt; PROLOG &lt;?xml version="1.0" encoding="iso-8859-1"?&gt; PROLOG; $XML .= "&lt;results&gt;"; $XML .= "&lt;result&gt;"; $XML .= "&lt;FirstName&gt;Gary&lt;/FirstName&gt;"; $XML .= "&lt;SecondName&gt;Willoughby&lt;/SecondName&gt;"; $XML .= "&lt;Age&gt;35&lt;/Age&gt;"; $XML .= "&lt;/result&gt;"; $XML .= "&lt;result&gt;"; $XML .= "&lt;FirstName&gt;Sara&lt;/FirstName&gt;"; $XML .= "&lt;SecondName&gt;Gostick&lt;/SecondName&gt;"; $XML .= "&lt;Age&gt;35&lt;/Age&gt;"; $XML .= "&lt;/result&gt;"; $XML .= "&lt;/results&gt;"; header("Content-Type: text/xml"); echo $XML; ?&gt; </code></pre> <p>The full error:</p> <pre><code>uncaught exception: [Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIXMLHttpRequest.open]" nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)" location: "JS frame :: http://www.kalekold.net/ajax/ :: AjaxRequest :: line 63" data: no] Line 0 </code></pre> <p>I just can't see where it's going wrong, any ideas?</p>
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