I have a small requirement..
if the user dint sign off or log off then he try's to close the browser IE clicking on 'X' (top right of IE or Firefox browser ) then i need to ask a conformation message like "Are you sure you want to close ?" ...
I am using Master page in my application and i tried the event : "window.onbeforeunload " in my master page its works fine, shows an alert(conformation) message. but if i press back button on the browser(IE on IE or Firefox) then also its firing(but it should not) is there any way to full fill my requirement ..I hope i had explained u clearly...if not pl z let me know........
what i mean to say is.. if the Session("USerid") is active or if it contains any value ie.
Session("USerid")="XXX"
at that moment if user trys to close the browse(click in 'X'/Close button browser either IE or Firefox ) it should give prompt a message "are u sure do u want to close?"..
Its all about design steps - but the close and the back button is the same, the close the page, so maybe its impossible to have them all together.
To open, close your script you can make a simple trick. Place them inside a literal and open or close it.
<asp:literal run="server" id="txtCloseAlert">
<script>
... you code here ....
</script>
</asp:literal>
and on code behind.
txtCloseAlert.visible = !string.IsNullOrEmpty(Session("USerid"));
I've looked into this recently and there does not appear to be a standard / consistent way to do this cross-browser hence you back-button problem.
On IE at least you get an event object passed as a parameter to the onbeforeunload method that you can use to get the mouse position, but in FireFox you don't and you would need some other way to determine whether a confirmation is required. It is quite posible that you could get the mouse position in some other way as I haven't looked into that. Point is that if your mouse is not on your form you probably want a confirmation.
You can look at this SO question:
Prevent browser from closing in asp.net
Or do an Internet search on 'onbeforeunload prevent browser closing'.
In your case a synchronous ajax call can be made to the server to do the test.
HTH
I'm implementing a search service called SearchInsideOut.
This search service simply replaces web page results by full web pages (Yes, I used iframe).
The problem I have to deal with is iframe-breaking pages.
The promising solution I found is using onbeforeunload to let users decide whether to stay or leave my site.
But this also creates another annoying behavior.
When users click other links in my site, onbeforeunload will also be triggered.
Fortunately, I could solve this case by placing window.onbeforeunload=null in the onclick event of those links of my site.
Unfortunately, I have no idea how to detect external events like clicking "refresh/back" buttons.
What should I do to solve this difficulty?
All suggestions and comments are highly appreciated.
Take as example this site. Try to refresh the page after u typed some text answering to a post. You will see that the page it will ask you to continue ur work or exit. Make another test without answering to a post, just refresh, you will see that the confirm will not showed, because the site is making a test if the "answer" is empty or not.
Example:
<html>
<head>
<script>
function closeIt()
{
var mytext = document.getElementById("mytext").value;
if(mytext != "")
return "Any string value here forces a dialog box to \n" +
"appear before closing the window.";
}
window.onbeforeunload = closeIt;
</script>
</head>
<body>
<textarea id="mytext"></textarea>
</body>
</html>
So it's up to u to decide when the box will show or not. Visit also Microsoft Msdn to understand when and how onbeforeunload works
for some reason, I get "Permission Denied" for line 20 in my .aspx when trying to view it from our dev server. Line 20 is simply the start of the JavaScript tag:
<script type="text/javascript">
// variables
var firstProductID;
var lastProductID;
var getProductIDs = new Array();
...
Are you trying to do an xhr (ajax) request to another domain?
Turn on script debugging in ie, reload the page and when you hit this error it will ask if you want to debug. You can debug in visual studio or ie debugger tools (if you have ie8) and youll see the exact script causing the issue.
The line numbering in the error is never what it seems due to included js libs etc.
Line numbers can be very misleasing if you are trying to match up the line number IE gives you with the line number in the ASPX file (because ASP.NET can produce HTML that you won't see in the ASPX source view).
If you do a View Source in IE6 is line 20 still the start of your script tag?
You have a SCRIPT tag with a SRC attribute that is pointed to a file that does not exist.
Check your path.
I am using the following JS function to open a pop-up window to display another website:
<script language="javascript" type="text/javascript">
function link()
{
window.open("www.google.com")
}
onClick="Link()"
The URL in the above example is just for testing. I actually intend on replacing the URL with a text value from a listbox, which is in the form of a URL. Anyway, when ever I start the debugger in Visual Studio, and execute the onClick, the pop-up window opens and gives me a page stating that there is a server error. Specifically, Server error in '/' application... resource cannot be found. Also, I notice that my URL is placed as follows: http://localhost:49456/www.google.com. I thought this function would give me a pop-up window with Google as the website. Is this a Visual Studio debugger issue, is my code wrong, or am I using the code in the wrong context? Any suggestions would be greatly appreciated.
you need to specify http:// in the url eg
window.open("http://google.com");
without that protocol specified, the browser will think the URL is relative to the current document.
Add http:// to your domain, i.e. http://www.google.com.
I have built a basic data entry application allowing users to browse external content in iframe and enter data quickly from the same page. One of the data variables is the URL.
Ideally I would like to be able to load the iframes current url into a textbox with javascript. I realize now that this is not going to happen due to security issues.
Has anyone done anything on the server side? or know of any .Net browser in browser controls. The ultimate goal is to just give the user an easy method of extracting the url of the page they are viewing in the iframe It doesn't necessarily HAVE to be an iframe, a browser in the browser would be ideal.
Thanks,
Adam
I did some tests in Firefox 3 comparing the value of .src and .documentWindow.location.href in an iframe. (Note: The documentWindow is called contentDocument in Chrome, so instead of .documentWindow.location.href in Chrome it will be .contentDocument.location.href.)
src is always the last URL that was loaded in the iframe without user interaction. I.e., it contains the first value for the URL, or the last value you set up with Javascript from the containing window doing:
document.getElementById("myiframe").src = 'http://www.google.com/';
If the user navigates inside the iframe, you can't anymore access the value of the URL using src. In the previous example, if the user goes away from www.google.com and you do:
alert(document.getElementById("myiframe").src);
You will still get "http://www.google.com".
documentWindow.location.href is only available if the iframe contains a page in the same domain as the containing window, but if it's available it always contains the right value for the URL, even if the user navigates in the iframe.
If you try to access documentWindow.location.href (or anything under documentWindow) and the iframe is in a page that doesn't belong to the domain of the containing window, it will raise an exception:
document.getElementById("myiframe").src = 'http://www.google.com/';
alert(document.getElementById("myiframe").documentWindow.location.href);
Error: Permission denied to get property Location.href
I have not tested any other browser.
Hope it helps!
document.getElementById('iframeID').contentWindow.location.href
You can't access cross-domain iframe location at all.
I use this.
var iframe = parent.document.getElementById("theiframe");
var innerDoc = iframe.contentDocument || iframe.contentWindow.document;
var currentFrame = innerDoc.location.href;
HTA works like a normal windows application.
You write HTML code, and save it as an .hta file.
However, there are, at least, one drawback: The browser can't open an .hta file; it's handled as a normal .exe program. So, if you place a link to an .hta onto your web page, it will open a download dialog, asking of you want to open or save the HTA file. If its not a problem for you, you can click "Open" and it will open a new window (that have no toolbars, so no Back button, neither address bar, neither menubar).
I needed to do something very similar to what you want, but instead of iframes, I used a real frameset.
The main page need to be a .hta file; the other should be a normal .htm page (or .php or whatever).
Here's an example of a HTA page with 2 frames, where the top one have a button and a text field, that contains the second frame URL; the button updates the field:
frameset.hta
<html>
<head>
<title>HTA Example</title>
<HTA:APPLICATION id="frames" border="thin" caption="yes" icon="http://www.google.com/favicon.ico" showintaskbar="yes" singleinstance="no" sysmenu="yes" navigable="yes" contextmenu="no" innerborder="no" scroll="auto" scrollflat="yes" selection="yes" windowstate="normal"></HTA:APPLICATION>
</head>
<frameset rows="60px, *">
<frame src="topo.htm" name="topo" id="topo" application="yes" />
<frame src="http://www.google.com" name="conteudo" id="conteudo" application="yes" />
</frameset>
</html>
There's an HTA:APPLICATION tag that sets some properties to the file; it's good to have, but it isn't a must.
You NEED to place an application="yes" at the frames' tags. It says they belongs to the program too and should have access to all data (if you don't, the frames will still show the error you had before).
topo.htm
<html>
<head>
<title>Topo</title>
<script type="text/javascript">
function copia_url() {
campo.value = parent.conteudo.location;
}
</script>
</head>
<body style="background: lightBlue;" onload="copia_url()">
<input type="button" value="Copiar URL" onclick="copia_url()" />
<input type="text" size="120" id="campo" />
</body>
</html>
You should notice that I didn't used any getElement function to fetch the field; on HTA file, all elements that have an ID becomes instantly an object
I hope this help you, and others that get to this question. It solved my problem, that looks like to be the same as you have.
You can found more information here: http://www.irt.org/articles/js191/index.htm
Enjoy =]
I like your server side idea, even if my proposed implementation of it sounds a little bit ghetto.
You could set the .innerHTML of the iframe to the HTML contents you grab server side. Depending on how you grab this, you will have to pay attention to relative versus absolute paths.
Plus, depending on how the page you are grabbing interacts with other pages, this could totally not work (cookies being set for the page you are grabbing won't work across domains, maybe state is being tracked in Javascript... Lots of reasons this might not work.)
I don't believe that tracking the current state of the page you are trying to mirror is theoretically possible, but I'm not sure. The site could track all sorts of things server side, you won't have access to this state. Imagine the case where on a page load a variable is set to a random value server-side, how would you capture this state?
Do these ideas help with anything?
-Brian J. Stinar-
Does this help?
http://www.quirksmode.org/js/iframe.html
I only tested this in firefox, but if you have something like this:
<iframe name='myframe' id='myframe' src='http://www.google.com'></iframe>
You can get its address by using:
document.getElementById('myframe').src
Not sure if I understood your question correctly but anyways :)
You can use Ra-Ajax and have an iframe wrapped inside e.g. a Window control. Though in general terms I don't encourage people to use iframes (for anything)
Another alternative is to load the HTML on the server and send it directly into the Window as the content of a Label or something. Check out how this Ajax RSS parser is loading the RSS items in the source which can be downloaded here (Open Source - LGPL)
(Disclaimer; I work with Ra-Ajax...)
Ok, so in this application, there is an iframe in which the user is supplied with links or some capacity that allows that iframe to browse to some external site. You are then looking to capture the URL to which the user has browsed.
Something to keep in mind. Since the URL is to an external source, you will be limited in how much you can interact with this iframe via javascript (or an client side access for that matter), this is known as browser cross-domain security, as apparently you have discovered. There are clever work arounds, as presented here Cross-domain, cross-frame Javascript, although I do not think this work around applies in this case.
About all you can access is the location, as you need.
I would suggest making the code presented more resilitant and less error prone. Try browsing the web sometime with IE or FF configured to show javascript errors. You will be surprised just how many javascript errors are thrown, largely because there is a lot of error prone javascript out there, which just continues to proliferate.
This solution assumes that the iframe in question is the same "window" context where you are running the javascript. (Meaning, it is not embedded within another frame or iframe, in which case, the javascript code gets more involved, and you likely need to recursively search through the window hierarchy.)
<iframe name='frmExternal' id='frmExternal' src='http://www.stackoverflow.com'></frame>
<input type='text' id='txtUrl' />
<input type='button' id='btnGetUrl' value='Get URL' onclick='GetIFrameUrl();' />
<script language='javascript' type='text/javascript'>
function GetIFrameUrl()
{
if (!document.getElementById)
{
return;
}
var frm = document.getElementById("frmExternal");
var txt = document.getElementById("txtUrl");
if (frm == null || txt == null)
{
// not great user feedback but slightly better than obnoxious script errors
alert("There was a problem with this page, please refresh.");
return;
}
txt.value = frm.src;
}
</script>
Hope this helps.
You can access the src property of the iframe but that will only give you the initially loaded URL. If the user is navigating around in the iframe via you'll need to use an HTA to solve the security problem.
http://msdn.microsoft.com/en-us/library/ms536474(VS.85).aspx
Check out the link, using an HTA and setting the "application" property of an iframe will allow you to access the document.href property and parse out all of the information you want, including DOM elements and their values if you so choose.