getElementById from parent works for Firefox not for IE - javascript

I am trying to access an element in my Edge Animate animation (which is a menu bar) from the parent document. The element has an onClick event which is triggered depending on the #bookmark in the URL of the parent web page. My code works perfectly in Firefox but does not work in Internet Explorer(10). IE is unable to see any elements within the 'Stage' div whereas Firefox can.
This is the JavaScript code on my parent page: -
<script language='javascript'>
var thisPage = window.location.pathname;
var fullurl = document.URL;
var xxx = fullurl.substring(fullurl.indexOf('#'));
var pageString = xxx.replace("#", "");
pageString = pageString.replace("http://www.mydomain.com/portfolio/photography.html", "");
if (pageString == "corporate") {
window.onload = function() {
var iframe = document.getElementById('U10511_animation');
var innerDoc = (iframe.contentDocument) ?
iframe.contentDocument : iframe.contentWindow.document;
var corporateRectangle = innerDoc.getElementById('Stage_Corporate_Rectangle');
corporateRectangle.click();
}
};
</script>
The above code will select the Corporate tab in the menu when viewed in Firefox but not IE when the URL has the suffix #corporate.
When I insert an 'alert' for the variable 'corporateRectangle' in Firefox it returns [HTMLObj] and in IE it returns 'null'.
Any ideas anyone? Thanks.

Have you tried checking the console for an error of some sort to help you and us understand the error?

IE JavaScript often works differently than in other browsers. And iframes are particularly problematical. One possibility is that you are getting the wrong document, such that the documentyou are retrieving either does not exist or does not contain the element you are looking for. So you just have to do some debugging. Here is how I would proceed. Run your script in IE.
1) Determine whether innerDoc is iframe.contentDocument or iframe.contentWindow.document. Make sure innerDoc is not null. If it is, try to get the document a different way.
2) Assuming innerDoc is not null, enumerate all of the elements in innerDoc. You can do that as follows:
for(i = 0; i < innerDoc.all.length; i++) alert(innerDoc.all [i].id);
Make sure that the id you are looking for is actually in the document. I suspect it isn't and that you need to get a different document object under IE.
I assume you are stuck with having to use iframes. If not, I suggest you use a different approach as iframes can be very problematical and browser-specific in how they work.

internet Explorer gets confused over name and id - it is highly recommended to treat these two attributes as if they were the same.
You can fix it either by 1) ensure that there are no id/name conflicts in your document, or 2)
override IE's native getElementById-method.
Read more about it here.

Ok... thanks to everyone who left suggestions.
The issue was that the menu animation has a preloader. Firefox ignores the preloader whereas IE treats the preloader as onLoad being complete. Therefore the attempt to access the element ID is null as it hasn't been loaded yet.
I decided to approach the problem from a different tack and read my bookmark from within the animation. This turned out to be a very simple solution once I figured out that I had to put the code in the first frame of the animation NOT in creationComplete or compositionReady.
This was the code: -
var bookmark = parent.window.location.hash;
bookmark = bookmark.replace("#", "");
if (bookmark == "corporate") {
sym.play("corp");
}
yes, as simple as that.

Related

Chrome ignoring hashes in URL

I've spent quite a while trying to find answers for this issue, but haven't had any success. Basically I need to scroll the user to the contact portion of the website when they go to healthdollars.com/#contact. This works just fine in Safari, but in Chrome I haven't had any luck. I've tried using jQuery/Javascript to force the browser to scroll down, but I haven't been able to.
Does anyone have any ideas? It's driving me crazy - especially since it's such a simple thing to do.
Not a full answer but in Chrome if you disable Javascript I believe you get the desired behavior. This makes me believe that something in your JavaScript is preventing default browser behavior.
It looks to me like the target element doesn't exist when when page first loads. I don't have any problem if I navigate to the page and then add the hash.
if (window.location.hash.length && $(location.hash)) {
window.scrollTo(0, $(location.hash).offset().top)
}
check for a hash, find the element's page offset, and scroll there (x, y).
edit: I noticed that, in fact, the page starts at #contact, then scrolls back to the top. I agree with the other answerer that there's something on your page that's scrolling you to the top. I'd search for that before adding a hack.
You can do this with JS, for example` if you have JQuery.
$(function(){
// get the selector to scroll (#contact)
var $to = $(window.location.hash);
// jquery animate
$('html'/* or body */).animate({ scrollTop: $to.offset().top });
});
The name attribute doesn't exists in HTML 5 so chrome looks to have made the name attribute obsolete when you use the DOCTYPE html.
The other browsers have yet to catch up.
Change
<a name="contact"></a>
to
<a id="contact"></a>
Maybe this workaround with vanilla javascript can be useful:
// Get the HTMLElement that you want to scroll to.
var element = document.querySelector('#contact');
// Stories the height of element in the page.
var elementHeight = element.scrollHeight;
// Get the HTMLElement that will fire the scroll on{event}.
var trigger = document.querySelector('[href="#contact"]');
trigger.addEventListener('click', function (event) {
// Hide the hash from URL.
event.preventDefault();
// Call the scrollTo(width, height) method of window, for example.
window.scrollTo(0, elementHeight);
})

In popup document.getElementById(tur).value it is coming in IE but isnt coming in Chrome

My problem is with popup. I use document.getElementById(tur).value in popup but it is workin in IE but isnt working Chrome. i wrote alert but didnt anything.
function birimSec(tur,id,txt)
{
alert(document.getElementById(tur).value);//doesnt work
document.getElementById(tur).value=id;
document.getElementById(tur+'ACK').value=txt;
if(document.getElementById(tur).onchange != null)
document.getElementById(tur).onchange();
}
'tur' is coming correct and it is working in IE but in Chrome doesnt working wh ?
thans for everything.
What code is used to call this? The problem is more likely to be there than in the function itself.
i used this code and it is working now :)
var win = ifrm.contentWindow; // reference to iframe 2 window
// reference to iframe 2 document
var doc = ifrm.contentDocument? ifrm.contentDocument: ifrm.contentWindow.document;
// reference to form element in iframe 2 document
var fld = doc.forms['formName'].elements[tur];
var counter = win.counter; // global variable in iframe 2
win.clearGreeting(); // call function in iframe 2
the iframe in parent page. thanks everybody

How to dynamically resize an iFrame (crossbrowser solution)

I am trying to include an iframe on a Drupal page. So far I successfully included the frame but the height resize function that I wrote only works in Internet Explorer. My goal is to make resize work inFirefox and Chrome as well. I searched the Internet but I couldn't find what I was looking for. Long story short, I want my frame to automatically resize height itself.
This is what I did so far (this is the code of the HTML page included in Drupal):
<script type="text/javascript">
function resize() {
var iframe = document.all.icw;
document.getElementById("icw").style.height = iframe.document.body.scrollHeight + "px";
}
</script>
<iframe id="icw" src="XXXXX" width="100%" scrolling="no" onload="resize()">
I understand that if the iframe lives on another domain the solution may be more difficult due to permissions. Is that correct?
These are the errors I get in Chrome and Firefox:
Chrome: Cannot read property 'body' of undefined
Chrome: JavaScript attempt to access frame with URL XXX from frame with URL YYY. Domains, protocols and ports must match.
Firefox: document.all is undefined
EDIT: What if I want to change one of the iframe element? In my case I need to change a textbox value. I understand I must do that when the page is loaded but I can't find a solution. No matter where I put the code I always a get a
Cannot call method 'getElementById' of undefined
when I try to access the iFrame textbox.
EDIT2: Asked a new question since they weren't related.
This solution works even cross-domain as long as you have access to both. There are a bunch of edge cases, but at least you can start with this. You can also add timer event to make sure iFrame is always a correct size so you never have scrollbar. Keep in mind this only works with browser supporting HTML5 due to the use of postMessage.
Inside iFrame
function resize(){
var body = document.body,
html = document.documentElement,
height = body.offsetHeight;
if(height === 0){
height = html.offsetHeight;
}
parent.postMessage({'action':'RESIZE', 'height':height}, '*');
}
Parent
function handleMessage(e) {
if (e.data.action == 'RESIZE') {
var targetHeight = e.data.height;
$('#iFrame').height(targetHeight);
}
}
window.addEventListener("message", handleMessage, false);
window.addEventListener("message", handleMessage, false);
This code do not work for IE.
For IE use
window.attachEvent("onmessage", handleMessage, false);
Check out this little library that does this and manages all the other edge cases for you.
https://github.com/davidjbradshaw/iframe-resizer

Print section of page script works perfectly in IE but problems in Firefox

In my battles to find a solution to printing just one area of the page that works within WordPress, I came across an excellent little script that meets my needs perfectly.. but only in IE browser. For some reason Firefox doesn't want to play ball.
The script is:
function printURL(sHref) {
if(document.getElementById && document.all && sHref) {
if(!self.oPrintElm) {
var aHeads = document.getElementsByTagName('HEAD');
if(!aHeads || !aHeads.length)
return false;
if(!self.oPrintElm)
self.oPrintElm = document.createElement('LINK');
self.oPrintElm.rel = 'alternate';
self.oPrintElm.media = 'print';
aHeads[0].appendChild(self.oPrintElm);
}
self.oPrintElm.href = sHref;
self.focus();
self.print();
return true;
}
else
return false;
}
Called by:
<a onclick="printURL(this.href); return false;" href="http://printstuff.com" target="_blank">print</a>
This is working in IE, but not FF. I don't know much about JavaScript, so would appreciate if you could tell me if there's anything you see that's giving Firefox headaches.
By the way - I have to go a javascript route instead of using a print CSS file, as the area I want to print (a coupon) is set in a table which is obviously set in the WordPress theme's container and wrapper divs which makes it difficult to isolate it for printing.
I've also experimented with iframe printing, which I made some headway with, but IE gives me problems there (rolleyes). So this script above seems a good answer to me, except Firefox does nothing when I click 'print'. Thanks a lot.
document.all tests false in all browsers other than IE. So your code is very explicitly only running the self.print() line in IE only.

jquery thickbox reference problem

Completely restated my question:
Problem: Losing reference to an iFrame with Mozilla firefox 3.6 and 4.0
More info:
- Works fine in internet explorer 8 64-bit and 32-bit version.
How to reproduce? In Mozilla: Open the editor accordion menu. Click the 'editor openen' link, in the editor fill in some random text, then click 'bestand opslaan'. Fill in a name and click on 'save'. The content of the editor will be downloaded in HTML format.
Close the save file dialog box by clickin outside of it or on the specified buttons. Click on the 'bestand opslaan' button again and try to save your content to a file. You'll see nothing happening.
The problem isn't there in IE8. Try opening it in there.
Firebug tells me this the second time you open the save dialog:
iFrame.document is null
Example Link: http://www.newsletter.c-tz.nl/
More info:
- switched from thickbox to colorbox to try and resolve this issue and because thickbox isn't supported for a long time now.
- colorbox gives me the same problem so I don't think it is this.
- tried googling for iframe reference error and like, found nothing.
- tried putting the iframe code outside of the div that is called by the colorbox script, it retains it reference but not when I put it back inside that div.
Thanks to: JohnP who offered to open a 'hunt' on this.
Edit:
I thought maybe the saveFile.php file was causing trouble to the parent of the iframe but after removing it from the action variable in the editor.php script it still fails with the same error after you open the dialog for a second time.
Can someone maybe write a script that iterates through iframes by name and when the rignt iframe is found reference it to a var? I want to try it but don't know how..
I can't explain why it's work the first time for Firefox, but in Firefox the function to used for get iframe is different of IE : How to get the body's content of an iframe in Javascript?.
So, replace your JavaScript function "saveToFile" to this :
function saveToFile() {
var saveAsFileName = document.getElementById('saveAs_filename').value;
var currentContent = tinyMCE.editors["editor_textarea"].getContent();
var editorFileName = document.getElementById('editor_filename');
var iFrameTag = document.getElementById('saveAs_Iframe');
var iFrame;
if ( iFrameTag.contentDocument )
{ // FF
iFrame = iFrameTag.contentDocument;
}
else if ( iFrame.contentWindow )
{ // IE
iFrame = iFrameTag.contentWindow.document;
}
var inframeEditorFileName = iFrame.getElementById('editor_filename');
var inframeEditorContent = iFrame.getElementById('editor_textarea');
editorFileName.value = saveAsFileName;
inframeEditorFileName.value = saveAsFileName;
inframeEditorContent.value = currentContent;
iFrame.editor_self.submit();
}
I replace the function with Firebug and it's works for me.
Update :
You can also used a crossbrowser solution, more simple, thanks to jQuery :
function saveToFile() {
var saveAsFileName = document.getElementById('saveAs_filename').value;
var currentContent = tinyMCE.editors["editor_textarea"].getContent();
var editorFileName = document.getElementById('editor_filename');
editorFileName.value = saveAsFileName;
$("#saveAs_Iframe").contents().find("#editor_filename").val(saveAsFileName)
$("#saveAs_Iframe").contents().find("#editor_textarea").val(currentContent)
$("#saveAs_Iframe").contents().find("form[name=editor_self]").submit();
}

Categories