a weird Javascript error

•

What is DaniWeb IT Discussion Community?

You're currently browsing the JavaScript / DHTML / AJAX section within the Web Development category of DaniWeb, a massive community of 391,706 software developers, web developers, Internet marketers, and tech gurus who are all enthusiastic about making contacts, networking, and learning from each other. In fact, there are 3,293 IT professionals currently interacting right now! Registration is free, only takes a minute and lets you enjoy all of the interactive features of the site.

Join our community!

Please support our JavaScript / DHTML / AJAX advertiser: Lunarpages Web Hosting

a weird Javascript error

•

Join Date: Nov 2004

Location: Netherlands

Posts: 5,646

Reputation: jwenting is a jewel in the rough

Rep Power: 18

Solved Threads: 191

jwenting

Offline

duckman

a weird Javascript error

Nov 15th, 2004

A piece of JavaScript on one of our pages gives an access denied error.
In itself nothing strange, it's a reasonably well defined error after all

What is strange is that the error ONLY happens on that page (despite identical calls to the JavaScript function appearing on several other pages) and that the error ONLY appears if the page is loaded in a fresh browser instance. If I reload the page before executing the script (which is triggered in the onblur event of a formfield) the error does not appear and the script is executed successfully.

The function of this script is to download some data from the application server and pipe that data into an HTML element (in this case a td, in other pages it may be a div).

Can anyone shed some light as to where to look for the cause of this?

Here's the relevant JavaScript and HTML (fragments of course):

Help with Code Tags

(Toggle Plain Text)

var myFrames = new Array();
function frameObj(index) {
    this.busy = true;
    this.index = index;
    obj = document.createElement("iframe");
    obj.style.height = "0px";
    obj.style.width = "0px";
    this.frame = document.body.appendChild(obj);
    if (this.frame.contentWindow)
	this.frameDoc = obj.contentWindow.document;
    else if (this.frame.contentDocument)
	this.frameDoc = obj.contentDocument;
    else
	this.frameDoc = null;
}
function findFrame() {
    for (i = 0; i < myFrames.length; i++) {
	if (!myFrames[i].busy) {
	    myFrames[i].busy = true;
	    break;
	}
    }
    if (i >= myFrames.length)
	myFrames[i] = new frameObj(i);
    return myFrames[i];
}
function getHTML2(oElement, form, data) {
	dataElement = oElement;
    if (!(frame = findFrame()))
	return;
    if (frame.frameDoc) {
	elms = form.elements;
	doc = frame.frameDoc;
	doc.open();
	doc.write("<html><body><form name=\"send\" method=\"post\" action=\"" +
	  form.action + "\">");
	doc.write("<input type=\"hidden\" name=\"iframe\" value=\"" + frame.index + "\">");
	doc.write("<input type=\"hidden\" name=\"data\" value=\"" + data + "\">");
	for (i = 0; i < elms.length; i++) {
	    elm = elms[i];
	    switch (elm.type) {
	      case 'button':
	      case 'file':
	      case 'reset':
	      case 'submit':
		continue;
	      case 'checkbox':
				if (elm.checked == false)
					continue;
	      case 'radio':
		if (elm.value == '')
		    continue;
	    }
	    doc.write("<input type=\"hidden\" name=\"" + elm.name +
	      "\" value=\"" + elm.value + "\">");
	}
	doc.write("</form></body></html>");
	doc.close();
	doc.forms["send"].submit();
    }
}
function getHTMLDone2(ind, result) {
	dataElement.innerHTML = result;
	dataElement.setAttribute('hasContent',true);
	elementInitTabctls(dataElement);
	elementTablesInit(dataElement);
    myFrames[ind].busy = false;
}

Code is part of a JSP, JSP code resolves correctly.

Help with Code Tags

(Toggle Plain Text)

<script language="JavaScript">
function getOnEnter() {
	if (window.event.keyCode == 13 ) {
		window.event.returnValue = false;
		getHTML2(ss, pageform, 'ss');
	}
}
function aktieOnEnter(arg) {
	if (window.event.keyCode == 13) {
		window.event.returnValue = false;
		faktie(arg);
	}
}
function faktie(arg) {
	document.pageform.uaktie.value = arg;
	document.pageform.submit();
}
</script>
<form name="pageform" action="../servlet/<%= ks.getServletName() %>" method="post">
	<input type="hidden" name="pageid" value="<%= request.getAttribute("pageid") %>">
	<input type="hidden" name="uaktie" value="<%= uaktie.getJSPValue() %>">
<div class="inh">
	<table class="inh" border="0" cellpadding="0" cellspacing="0">
		<tr>
			<td rowspan="3"><img src="../lib/login.gif"></td>
			<td class="rowhead">Naam</td>
			<td><input class="text" type="text" name="naam" 
			  autocomplete="off"
			  value="<%= naam.getJSPValue() %>" 
			  onkeypress="getOnEnter();"
			   onblur="getHTML2(ss, pageform, 'ss');"
			/></td>

		</tr>
		<tr>
			<td class="rowhead">Wachtwoord</td>
			<td><input class="text" type="password" name="wachtwoord"
			  value="<%= wachtwoord.getJSPValue() %>" /></td>
		</tr>
		<tr>
			<td class="rowhead" id="sh">
				Server
			</td>
			<td id="ss">
			    &nbsp;
			</td>			
		</tr>

DaniWeb Home > Forums > Web Development > JavaScript / DHTML / AJAX > a weird Javascript error

a weird Javascript error

a weird Javascript error

a weird Javascript error