JavaScript code in iframes in IE9 not working - javascript

I've a very complete site in ASP.NET which uses iframes. I'm working to change an old control we'd been using to show dialogs to use jQuery UI dialogs. I'm also making sure everything works well in IE9.
The fact is: the script I've in the pages shown in iframes is not working in IE9. Why? Because Object, Array and String are undefined. There may be some others issues, I've seen only this ones.
There is no chance (because a lot of reasons) to stop using iframes on some dialogs. And I'd rather not to use the meta tag to force IE8 Compatibility. Does anyone know any way to fix this ugly bug in IE9?
jQuery code for the iframe in a plugin I've made to config jQuery UI dialog:
options.content = $("<iframe>")
.attr("src", options.intSrcIframe)
.attr("frameborder", 0)
.attr("scrolling", options.intIframeScrolling)
.css("background-color", options.intBgColorIframe)
.attr("height", "100%")
.attr("width", "100%");
_this.html(options.content);

Note: here there is some documentation from IE9 that may help to understand. Thanks to #Ben Amada for sharing it.
After almost a week of going crazy day after day I found it out.
The problem with IE9 is no specifically with the javascript code in the iframes. Not even with the javascript in iframes added by javascript or any library (I have lots of js libraries and plugins that could be screwing IE9).
The problem is when you move the iframe or one ancestor through the DOM. IE9 will excecute the code in the page loaded in the iframe as many times as moves you make. Each time (but the last one) will have Object, String, Array and others undefined (and other bugs too).
Example:
var iframe = $("<iframe>").attr("src", "www.example.com").attr("id", "myIframe");
iframe.appendTo("body");
$("#myIframe").appendTo("form:eq(0)");
The javascript code in "www.example.com" will be executed once with the error described above and then once with no errors.
With the following code the code will be excecuted just once and correctly:
var iframe = $("<iframe>").attr("src", "www.example.com").attr("id", "myIframe");
iframe.appendTo("form:eq(0)");
I hope this helps someone to avoid this pain in the ass,
Diego

There is a similar way of achieving this using an existing iframe if you aren't creating a new element.
$(function () {
var iframeSrc = $("#iframeid").attr("src"); // capture target URI
$("#iframeid").attr("src", "about:blank"); // delay loading until we reposition in the DOM
$("#iframeid").appendTo("#newparent").attr("src", iframeSrc); // reposition, load iframe by setting src
});
IE9 or jquery framework needs to fix this issue.

I'm having a similar issue, however the iframe is added to the page rather than removed from it. It still appears to have the same problems.

Related

jQuery misbehaving in Safari

I'm having a problem where certain bit of code is working perfectly across all browsers until I come to Safari where it's giving me issues. I inherited this code, and I'm not a jQuery expert so needless to say I'm a bit baffled:
var xt_begin=$('#begin')[0];
xt_begin.currentTime = 0;
xt_begin.play();
"#begin" is an audio element that was set in the HTML that's using this code and the .play() function is in a jQuery plugin that's being used (Link to plugin).
In all browsers except for Safari, play is being defined as if xt_begin were an object of that timer class. In safari, however, it remains undefined and the code stops working. I have no idea how this happens or how to fix it. I can post more code if need be, any help would be appreciated.
**Update
Upon further investigation it turns out it is a DOM element, and I'm a bit thick. However, Safari seems to have a problem recognizing audio elements for some reason. It's identifying it as an "object HTMLelement" whereas Firefox shows it as "object HTMLAudioElement". I'm still stumped on this one.
**SOLVED
Apparently Safari needs quicktime installed on your desktop for it to use audio elements. That's gonna make this app I'm fixing completely useless, but at least I know now. Thanks for the help folks.
Really just a comment. The statement:
var xt_begin = $('#begin')[0];
is effectively the same as:
var xt_begin = document.getElementById('begin');
so xt_begin is either a DOM element or undefined (jQuery) or null (plain JS). Which is it?
In any case, you should probably follow with:
if (xt_begin) {
/* do stuff with xt_begin */
}
to avoid errors.
Try:
var xt_begin = document.getElementById('begin');
Instead of the jQuery line. That works across all browsers and will at least tell you if you have a jQuery problem or a Safari/web page problem.

Jquery Error in ie8 and ie9 with Wordpress theme. (Object doesnt support this property or method)

I recently launched a website for a client http://www.bridgechurch.us/ only to recieve complaints of it not displaying correctly on ie8 or ie9. I have confirmed this to be true. IE is pointing to this line of Javascript:
jQuery(function () {
jQuery(".scrollable").scrollable({circular: true}).navigator().autoscroll({interval: 7000});
[...]
Can anyone help me figure out what is wrong with this line of code?
Thank you
UPDATE - FIXED
I figured out that there was a comment before the Doctype Declaration that forced IE into quirks mode.
You have a lot of 404's on that page, mainly related to ie-specific css and border images, which is probably why the page doesn't look like it should. Files like /images/internet_explorer/borderBottomRight.png and /wp-content/themes/Moses/styles/default.css aren't loading.
That being said, looking at the scrollable documentation, there is no .navigator() function off of the return value of scrollable(); and I'm getting the same error in Chrome.
Well, visually, the site doesn't appear to work well at all in IE9 (compared to Chrome). But just looking at the code that adds scrollable() to jQuery, you can see that that function doesn't always return the original element. In your code, if you split the call into two, you might be ok:
jQuery(".scrollable").scrollable({circular: true});
jQuery(".scrollable").navigator().autoscroll({interval: 7000});
I blame the plug-in on this one: functions that extend jQuery are supposed to always return the original elements found by the selector.

Whitescreen issue in IE9 - Removing iframe

I"m wondering if anyone can give me some insight into a really strange IE9 issue I've been struggling with.
I'm finishing up production of a site for work - it works well in ff/chrome/ie7/ie8 with no script errors.
On IE9 the last step of the application causes the entire tab to whitescreen with no script errors or warnings. (changing the document mode to ie8 will fix the problem but is obviously unsuitable for production)
Unfortunately the site pretty complex with a ton of ajax, and in-page scripts so I can't really post the relevant code easily. I'm more trying to figure out how to diagnose this.
I've checked the IE error logs and they are empty. Web developer tools tells me nothing. The site is not using any plugins (Flash/Silverlight, Ect. ) just javascript w/jQuery.
There is a PDF being displayed in an iframe around the step where it fails - but a nearly identical pdf is displayed in the previous step (using the same method) without problem. The code fails around a call to the jquery UI window but I can't seem to get the exact line.
If anyone has a clue how to try to diagnose this further I'd really appreciate it. I can keep hunting for the bug but I've never seen this kind of behavior before and just am not sure what I am looking for.
Thanks for all the input on this. Sorry I got completely overwhelmed by a few projects at once so I wasn't able to post updates on the debugging steps.
It took forever but I finally realized that everything was crashing when I closed the dialog containing the first PDF.
One of my helper functions was opening the dialog and automatically destroying the contents on close. Normally this works fine as I'm either removing a div containing the page fragment, or the iframe.
In this situation I had a page fragment loaded into the dialog which contained some buttons and the pdf iframe. I called the .remove() method on the parent element containing the iframe rather than the iframe itself. For some reason this seems to work fine in every other browser - but in IE9 it pretty much kills the page rendering without any warning or message.
I strongly suspect that the culprit is the adobe plugin but I'm not entirely sure.
Here is the fix-
Html:
<div id="container">
<iframe src="loremipsum.pdf"></iframe>
</div>
Javascript:
//Ruins my entire week
$("#container").remove();
//Works as the pdf is removed directly
$("#container").find("iframe").remove().end().remove();
I ran into the same issue on IE11 while trying to remove an iframe in a div with AngularJS. Removing the iframe first would just cause the same issue, so I navigated the iframe src to a new page (about:blank) first, then removed the div which worked. Hopefully this helps someone with a similar problem.
Pseudo-code below:
$ctrl.iframeUrl = 'about:blank'; // change the iframe url here
$timeout(function(){
$ctrl.removeIframe(); // remove the iframe here
});
As a thing to try - see what's in the IE9 DOM viewer after it whitescreens. There's a decent chance that most of the stuff is there and just not rendering properly (or having something else rendered over it). At the very least, knowing whether it's losing a ton of stuff out of the DOM or not should give you some useful data.

IE 8 Frameset / Javascript error

Ok here's the problem. I have a page that works in FF3 and Safari4 no problem. It's IE8 that's causing the issue, go figure. I remember in the Netscape days when it was the opposite.
Anyways,
So i'm building a website for a friend - i have three pages. the first two work fine on their own, but when they are combined in a frameset in the third (main.html) in IE8 all hell breaks loose. here are the pages:
www.wither.org/Karoline/navigation.html
www.wither.org/Karoline/portfolio.html
http://www.wither.org/Karoline/main.html
& my CSS if you want it: www.wither.org/Karoline/css/styles.css
if anyone can figure out how to fix this, i'd be eternally grateful. It's completely baffling to me and i've tried all kinds of options. i upgraded jquery to the latest version but then my scroller didn't work and i can't dive too much into the javascript code right now.
Please if you could help out, it would mean a lot to me. this has to go live sometime tomorrow.
There is a JS error when executing the following line of code document.getElementById("loading").style.display = 'none';
in the portfolio page.
Apparently, the element with id 'loading' is not being found. However, if I continue execution of the JavaScript on the page (from within the debugger), there are no issues, and the behavior is the same as in Firefox. This is indicative of a concurrency issue - the element 'loading' is not present in the DOM yet, but the script is attempting to change the element's style.
In order to fix this issue, you will have to ensure that the 'loading' element is present in the DOM before its style is being changed. In fact, you could delay the execution of the onload event handler (using window.setTimeout), until a point where the element is present in the DOM.
What's the actual javascript error?
And IE does have an issue in regards to invalid/broken markup inside of frames, I would try
a) commenting out each script and see which causes the js error
b) if commenting out all the js did nothing it might be related to the invalid markup inside of a frame issue, in which case I'd ditch frames alltogether.
yeah....
so thanks so much for your help. problem solved and i figured the other CSS error. should have picked up on that one earlier.
so site is working and if you want to see what happened with your help,
http://www.wither.org/Karoline
it works perfectly cross platform. made the deadline with hours to spare. thanks SO much. can't believe how well this worked.

Safari issues with javascript + css

I have some strange behavior going on with safari, im using the jQuery.GridLayout plugin and css for styling.
Just for some context, this website layout is a simple header followed by the content which are a collection of blocks (each block is a div) positioned by the javascript and rearranged every time the window is re-sized.
When I direct safari to the website url all the blocks overlap to some degree (like 50%) but as I re-size the window if they have to move, automatically all goes to the correct place and only breaks if I refresh the page.
So it seems that loading the page is messing it up either because something fails to register or because something does not happen until I re-size the window.
As anyone experienced such behavior within safari?
It works perfectly in firefox and opera, its an valid html 4.01 transitional page and the css is also validated (wc3 wise that is).
I know that publishing the code is invaluable to sort this kind of issues but this is a production project and I'm obliged not to it.
Either way I appreciate any advice on were to start looking?
How do one goes about debugging this issues in safari?
Thank you.
Safari fires DomReady before linked resources are loaded. This race condition regarding calculating sizes of elements defined in CSS can usually be avoided by loading your CSS resources before any JavaScript (eg: make sure the tags appear in the before ANY tags (which are blocking, but give a change for CSS to load asynchronously). Worse case scenario, move your blocks to the last element in , leaving your tags above.
CSS concatenation of multiple files (if you have them) is also recommended.
If you aren't able to post the actual code of the page for us, you might find your solution while trying to reproduce the problem without your specific content. In the past, I've solved some of my own problems while trying to generate a page that shows the problem to post on IRC / SO. If you are able to reproduce the problem without your content, post it for the community, and an answer will be much easier to find.
My shot-in-the-dark guesses lead towards:
You may find that one of your content blocks is causing the issue.
You may find that a different library you are using is causing the issue.
Some javascript code for your layout may be running before everything is ready / filled in. From my memory, Safari is quick to display pages before images are loaded for instance.
Perhaps you need to specify the an exact width/height of some of your Grid Containers.
Small update:
(new update at bottom)
http://www.howtocreate.co.uk/safaribenchmarks.html
And also something that is working is this small script:
<script language="JavaScript">
// CREDITS:
// Automatic Page Refresher by Peter Gehrig and Urs Dudli www.24fun.com
// Permission given to use the script provided that this notice remains as is.
// Additional scripts can be found at http:
//www.hypergurl.com
// Configure refresh interval (in seconds)
var refreshinterval=20
// Shall the coundown be displayed inside your status bar? Say "yes" or "no" below:
var displaycountdown="yes"
// Do not edit the code below
var starttime
var nowtime
var reloadseconds=0
var secondssinceloaded=0
function starttime() { starttime=new Date() starttime=starttime.getTime() countdown()
} function countdown() { nowtime= new Date() nowtime=nowtime.getTime() secondssinceloaded=(nowtime-starttime)/1000
reloadseconds=Math.round(refreshinterval-secondssinceloaded) if (refreshinterval>=secondssinceloaded)
{ var timer=setTimeout("countdown()",1000) if (displaycountdown=="yes")
{ window.status="Page refreshing in "+reloadseconds+ " seconds"
} } else { clearTimeout(timer) window.location.reload(true) } } window.onload=starttime
</script>
I find it odd that a refreshing script solves the issue in safari, but if i manually refresh the page the page havoc ensues...
########UPDATE##########
Well I finally got some more time to work on this and after doing some reading a rather obvious thing came to my mind, let the content load and then format it, so for now all of my js sits between </body> and </html>.
Its not perfect since now you can catch a glimpse of the content without being properly placed when the page first loads.
Maybe ill try calling the js a second time after a few ms have passed of loading.
I know this was proposed a bit upper the thread I just needed time to get my hands dirty thanks all, Ill keep updating till I get it solved in a more proper fashion :)

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