On page reload entire focus on an id - javascript

I'm working on some accessibility stuff for a client and the site is basically in Ruby on Rails but I know this needs some JS that I'm pretty weak with. The site has three links that then trigger an iframe. So it's something like this:
<%=link_to("Alpha", "#alpha")%>
<%=link_to("Beta", "#beta")%>
<%=link_to("Gamma", "#gamma")%>
<iframe src="<%=#url%>" width="100%" height="500px;" id="myFrame" tabindex="0" title="<%=#title%>"></iframe>
<script>
window.onload = function() {
document.getElementById("myFrame").focus();
};
</script>
I'm testing the screen reading using ChromeVox and on page load/and reload it will read off the navigation from the top of the page. The keyboard focus is definitely on the iFrame but it reads through the entire page.
So how do I force the entire focus on the iFrame on a page reload?

This answer here seems like it may work for you. That would mean updating your code to have the aria-live attribute "assertive", such as:
<iframe src="<%=#url%>" width="100%" height="500px;" id="myFrame" aria-live="assertive" tabindex="0" title="<%=#title%>"></iframe>

Related

entering input causing link change

This sort of links back to a previous question that I made. The goal was to change the iframe src with a text input. After lots of experimentation, it worked. However, this has arisen a new problem. After I enter the link and submit it, it adds /?link=linkhere to the end of the page and refreshes it. Then, once it's refreshed, the original src comes back, making it useless.
Here's the most important code:
<iframe
id="minecraftFrame"
src="//classic.minecraft.net"
height="500"
width="800"
frameborder="0"
scrolling="no"
allowfullscreen="true">
</iframe>
<input type="text" id="myInput" name="input">
<button class="button" onclick="changeChannel()">Go</button>
<script>
function changeChannel(){
document.getElementById("iFrame").src = document.getElementById("myInput").value;
}
</script>
I'm unsure of what to try at this point, since I'm not too experienced with javascript. I just don't want the main page to refresh after change the src.
You need to prevent default, i.e. stop event bubbling which is resulting in reload. See if that works for you. Seems like it should as you are submitting the form which would result in refresh of the page.
function changeChannel() {
event.preventDefault();
// ...
}
Your code included this --- document.getElementById("iFrame").src
the id of the iframe is "minecraftFrame" and not "iFrame"
or you could use document.querySelector('iFrame')
and stop the page reload with
function changeChannel(e) {
e.preventDefault();
// Code goes here
}

Changing an iframe SRC dynamically

What I have and I need to do it work properly is when I'm in a "start page" and I click a button like this:
PAGE-1
Point A
It should send me to "another page" where I load dinamically an iframe taking each variable (shopID, type, max-levels and point) from the URL and print it like an iframe this way:
PAGE-2
<iframe id="frame" src="http://myappwebsite/resourcesiframe?shopId=3366&type=image&point=A" width=“XXX" height=“XXX"></iframe>
I've used this javascript snippet but anyway, I can't make it work properly at all.
$(".map-button").click(function (e) {
e.preventDefault();
$("#frame").attr("src", $(this).attr('data - iframe - src'));
});
I only need to get the variables from the data-iframe-src and use them in the iframe, but I'm not able... The problem is that I load elements in different pages, so I don't know how this affect to the URL variables.
I've founded a simple solution for my problem here and it works for me.
First of all I put this simple iframe in my PAGE-2:
<iframe id="frame" src="" width="100%" height="auto" frameborder="0" scrolling="yes"></iframe>
Then in PAGE-1 I've used this type of links:
https://myappwebsite/page-2?shopId=1234&type=image&max-levels=1&point=A
So now my PAGE-2 loads properly with these params in the URL. Then I've used this simple snippet in Javascript to fill my iframe in PAGE-2:
<script type="text/javascript">
$( document ).ready(function() {
$("#frame").attr("src", "https://myappwebsite/resourcesiframe" + window.location.search);
});
</script>
And it works! Now I can go to PAGE-2 with all my params, pick them and use them in SRC inside the blank iframe.
Thanks for getting me in the correct path!

Embed (iframe or object) and Modify (jQuery) webpage

I'm simply trying to load another webpage in my webpage using the object tag or iframe. Then, I would like to remove some element of the loaded page with jQuery.
Here is my code
<div>
<object type="text/html" data="http://ebird.org/ebird/map/eurtre1" width="100%" height="400px" id="eurtre1">
</object>
</div>
<script>
jQuery( window ).load(function() {
jQuery('#map-sidebar').remove();
});
</script>
And, as you guess, it is not working...
I have tried:
jQuery('#eurtre1').contents().find('#map-sidebar')
and
jQuery('#eurtre1')[0].contentDocument.children
The wired thing is that on my browser, I can do it in the console, once I've selected the inside of the object...
Any idea ?
Here's a link to a similar question:
how to access an iframe and affect it with jQuery
Basically you can't due to Javascript same-origin policy but if you have access to the loaded content in the iframe you could use window.postMessage
You could also add a parameter to the iframe's src tag to post a message, something like this:
<iframe src="http://www.example.com?hideElement=true"></iframe>
Again you will have to have access the content of the iframe to check the param and execute your code.

How does target="framename" work when iframe DOM has changed

I know iframes are evil, but mine is legacy app n I need to use iframes in it. So...
I need to create n display tabs of iframes dynamically for my web app. All frame sources are intra-domain so full traversal n access within the frames possible.
The problem with iframes n the DOM is that these iframes register as window.frames.framename, so I will have an array of those objects in the "frames" object.
My requirement states that the "active" frame must have the name "form". So I change that iframe attribute when setting that frame as active. But this doesn't reflect in the DOM as window.frames.form, so I change that too manually by setting the current frame object like this:
frames.form = my_frame.content Window
All this works fine n I'm able to now access everything in n out of the active "form" iframe properly.
The problem now is with my links in the main page that have target="form". The target is not being recognized as the latest set (active) iframe with the name "form", n hence that link when clicked opens up in a new window/tab in the browser. This behavior is in all browsers except firefox. (Firefox does the required thing: open those links in the latest form iframe)
I suppose I don't have the knowledge of how the browser manipulates such changes in the DOM related to iframes. So any help would be appreciated. Thanks!
UPDATE:
Here's a simplified code (note: not original code): http://jsfiddle.net/u4VJL/5/
function AddNewTab(e) {
$('#list').attr('id', 'nolist').attr('name', 'nolist');
$('#form').attr('id', 'noform').attr('name', 'noform');
$(document.body).append('<iframe id="list" name="list" src="" marginwidth="0" marginheight="0" scrolling="auto" frameborder="1" class="form" style="width:22%"></iframe>');
$(document.body).append('<iframe id="form" name="form" src="" marginwidth="0" marginheight="0" scrolling="auto" frameborder="1" class="form" style="width:74%"></iframe>');
frames.list = $('#list')[0].contentWindow;
frames.form = $('#form')[0].contentWindow;
return false;
}
$('#addnew').click(AddNewTab);
Steps to reproduce the issue:
Click the "Add new tab" link once.
Click "Sample link" - and that href will load in the right frame
named "form".
Click "Add new tab" again. A new set off iframes should show up.
Click "Sample link" again. The page should now load in the 2nd right
frame, but it loads in first.
NOTE: Browsers with this issue (that I've tested in): Google Chrome,
IE8. Firefox does not have this issue.
you need to use live:
$('#addnew').live("click", AddNewTab);
uhh, it was a wrong answer, i think you need to look this way:
$("a[target=form]").click( function(){
$("#form").last().attr("src", $("a[target=form]").attr("href"));
$("#form").reload();
return false;
});
this works
frame name indeed. This works (in Firefox, Chrome, and IE8 n above):
function AddNewTab(e) {
$('#list').attr('id', 'nolist').attr('name', 'nolist');
$('#form').attr('id', 'noform').attr('name', 'noform');
if (frames.list) frames.list.name = 'nolist';
if (frames.form) frames.form.name = 'noform';
$(document.body).append('<iframe id="list" name="list" src="" marginwidth="0" marginheight="0" scrolling="auto" frameborder="1" class="form" style="width:22%"></iframe>');
$(document.body).append('<iframe id="form" name="form" src="" marginwidth="0" marginheight="0" scrolling="auto" frameborder="1" class="form" style="width:74%"></iframe>');
frames.list = $('#list')[0].contentWindow;
frames.form = $('#form')[0].contentWindow;
frames.list.name = 'list';
frames.form.name = 'form';
return false;
}
$('#addnew').click(AddNewTab);
Working code here: http://jsfiddle.net/krislogy/u4VJL/8/
((PS: tchh!! I swear I had tried this but couldn't make it work before. Anyway, I guess I was wrong when I thought I tried it. Thanks all!!))

Accessing element inside iFrame returning null

I have a form that posts to an iFrame. The website inside the iFrame is something I have no control over. However I would like to set the display of a few images inside the iframe to "none".
<form id="testForm" method="post" target="testFrame">
<input type="hidden" name="RequestXML" ID="RequestXML" value="<Request><RedirectURL>Account/TokenRequest</RedirectURL></Request>"
</form>
<iframe id="testFrame" name="testFrame" frameborder="0" style="width:1000px;height:500px"> </iframe>
Here is my script at the top of the page:
<script type="text/javascript">
$(function () {
$("#testForm").attr("action", "http://externalwebsite.aspx");
$('#testForm').submit();
var iframe = document.getElementById('testFrame');
var innerDoc = iframe.contentDocument || iframe.contentWindow.document;
//alert($("#testFrame").contents().find("body").html());
//alert(innerDoc.innerHTML);
});
</script>
Both my alerts return null in Chrome, IE and firefox. What is the best way to access the elements inside that iframe. (in chrome i dont even see the html of that website when I try to do "inspect element" and view the html)
By the way I am doing all this in a MVC4 project
Assuming this is not a cross-domain issue, try:
var body = $('#testFrame').contents().find('body');
Since this cross domain you have two options.
if you have access to the iframe code, then you can place XDM code in there, maybe easyXDM would help.
Or
you have to go server side and get your php/asp.net etc backend to go get the page and get what data it needs.

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