We Keep Coding

jQuery load local iframe url with escaped characters for disqus commenting

I'm loading a custom page type that is just comments for a post. This is so I can use Disqus threads for easier usability when multiple loop posts are on a single page.
When loading an iFrame with the following structure I keep getting this syntax error. Are my escape characters wrong?
$(".boxyComments a").click(function (event) {
event.preventDefault();
var post_id = $(this).attr("rel");
$(".commentsIframeBig")
.get(0).contentWindow.location.href =
$("<?php echo get_site_url(); ?>","\/ajax-post-fold\/",post_id);
What's happening is the get retrieves the Wordpress hook to print the site url (in this case it prints http://whateverdomainex.com for the 1st call, 2nd should print /ajax-post-fold/ and the last call should print the post ID so the entire url ends up printing as http://whateverdomanex.com/ajax-post-fold/2825.
Instead my Chrome console gives me the following message:
Uncaught Error: Syntax error, unrecognized expression: /ajax-post-fold/
Update
I've put this variable into place and called it rather than the $("<?php echo get_site_url(); ?>","\/ajax-post-fold\/",post_id); as the get reference:
var postLink = $("<?php echo get_site_url(); ?>"+"\/ajax-post-fold\/"+post_id);
Implemented as such:
$(".boxyComments a").click(function (event) {
event.preventDefault();
var postLink = $("<?php echo get_site_url(); ?>"+"\/ajax-post-fold\/"+post_id);
var post_id = $(this).attr("rel");
$(".commentsIframeBig")
.get(0).contentWindow.location.href = postLink;
Which gives me the following Chrome message:
Uncaught Error: Syntax error, unrecognized expression: http://www.theciv.com/ajax-post-fold/28448
The URL that should be in the src attribute for the iFrame looks like it should be fine and good to go, so why is this syntax error still being output?
UPDATE
var postLink = "<?= site_url('\/ajax-post\/'); ?>"+post_id;
$(this).closest(".boxy").find(".commentsIframeBig")
.css("display","block")
.animate({height: "100%"}, 500)
.get(0).contentWindow.location.href = postLink;
With the proper structure above, the custom page is now loading in the iFrame. However the additional construct of +page_id which includes the rel attribute containing the post's id isn't loading properly.
Moreover when calling the new url as it's original custom page template, then adding the post's id does not load the correct page with post id. Confused yet? Read it again. Took me awhile to write that sentence.
In any case, now my mission to have the post id load when adding the custom page and the post_id as an added string for the iFrame's url to load properly.
update
Here is final working code to load Disqus comments into same page, pseudo multiple times.
Basically this is pushing a post id to the end of a custom page type, resulting in the post's content and attributable elements being loaded into the custom page template.
When stripping that custom page template down to just show the comments for the page, you can create a load/unload reaction whereby you are only calling Disqus once, removing that instance and then loading it again when another Load Comments button is clicked within a subsequently loaded post on the same page. Yay. Multiple Disqus commenting on one page with minimal Ajax loading.
Here is the structure et al that is almost working for me. Only 2 bugs left. First is the secondary load when emptying, then reloading the new Disqus page into the Ajax element using the .ajaxComplete() callback function.
What's happening now is the callback is basically not being fired at all. As far as I can tell. Clicking on it a second time however, does make the call. But this is due to the class parameters being met for the else statement.
Second bug left is I'm having a hard time figuring out how to get the appropriate elements to enlarge, while leaving the others the same size.
// Load comments and/or custom post content
$(".boxyComments a").click(function (event) {
event.preventDefault();
$.ajaxSetup({cache:false});
var post_id = $(this).attr("rel"); var excHeight = $(this).closest('.boxy').find('.initialPostLoad').height();
var postHeight = $(this).closest('.boxy').find('.articleImageThumb').height();
var postWidth = $(this).closest('.boxy').find('.articleImageThumb').width();
// close other comments boxes that may already be open
if($('.commentsOpen').length ) {
console.log('comments are open');
$('.bigBoxy').closest('.boxy')
.animate({height:(postHeight + excHeight)}, 500);
$('.showComments')
.removeClass('bigBoxy')
.removeClass('commentsOpen');
$('.commentsAjax')
.empty(function(){
$(this).closest(".boxy").find(".showComments")
.addClass("commentsOpen")
.addClass("bigBoxy");
$(".bigBoxy").find(".commentsAjax ")
.css("display","block")
.animate({height: "500px"}, 500)
.load("http://<?php echo $_SERVER[HTTP_HOST]; ?>/ajax-post/",{id:post_id});
$(this).closest(".boxy")
.ajaxComplete(function() {
var excHeight = $(this).closest('.boxy').find('.initialPostLoad')
.height();
var postHeight = $(this).closest('.boxy').find('.articleImageThumb')
.height();
$(this).closest(".boxy").animate({height: (postHeight + excHeight)}, 500)
});
});
} else {
$(this).closest(".boxyComments").find(".showComments")
.addClass("commentsOpen")
.addClass("bigBoxy");
$(this).closest(".boxy").find(".commentsAjax")
.css("display","block")
.animate({height: "500px"}, 500)
.load("http://<?php echo $_SERVER[HTTP_HOST]; ?>/ajax-post/",{id:post_id});
$(this).closest(".boxy")
.ajaxComplete(function() {
var excHeight = $(this).closest('.boxy').find('.initialPostLoad')
.height();
var postHeight = $(this).closest('.boxy').find('.articleImageThumb')
.height();
$(this).closest(".boxy").animate({height: (postHeight + excHeight)}, 500)
});
}
});

Okay, here's full working code to do what you want. You'll have to swap out a few placeholders for your actual code:
<script>
jQuery(document).ready(function($){$(".boxyComments a").click(function (event) {
event.preventDefault();
var post_id = $(this).attr("rel");
var postLink = "<?= site_url('/path/'); ?>"+post_id;
$("#myFrame").attr('src', postLink);
});
});
</script>
And sample divs & iFrame:
<div class='boxyComments'>
<a href='#' rel='some-url'>test link</a>
</div>
<div class=".commentsIframeBig">
<iframe id='myFrame' height="500px" width="800px" src=''>
</iframe>
</div>
Tested it locally and it worked no problem. You might have been running into issues with it not properly accessing the iFrame. If you can give the iFrame an id that makes it easier.

It's because you're declaring var postlink as a jQuery object. You just need to get it as a string that you can then pass to the iframe.
var post_id = $(this).attr("rel");
var postLink = "<?= site_url('/ajax-post-fold/'); ?>"+post_id;

UPDATE 2
Looks like the string shouldn't be included within the <?= get_site_url() ?> after all.
Instead I've created a few vars to affect it. Code updated below with answer:
var postDir = "\/ajax-post-fold\/";
var postLink = "<?= get_site_url(postDir); ?>"+"\/ajax-post-fold\/"+post_id;

Showing iFrame only after its source content has been completely loaded

I have a iFrame on my page thats display style is none. I have a javascript function to set the source and then set the display to block. The problem is that the iframe shows up before the content of it is loaded and thus I get a flickering effect. It goes white first and then displays the content. So I need to set the source, and when done loading all content of its source, only set its display style.
CSS & Javascript
.ShowMe{display:block;}
function(url)
{
document.getElementById('myIFrame').src = url;
document.getElementById('myIFrame').className = ShowMe;
}

It's simple as that:
<iframe onload="this.style.opacity=1;" style="opacity:0;border:none;

I would suggest you try the following:
<script type="javascript">
var iframe = document.createElement("myIFrame");
iframe.src = url;
if (navigator.userAgent.indexOf("MSIE") > -1 && !window.opera){
iframe.onreadystatechange = function(){
if (iframe.readyState == "complete"){
//not sure if your code works but it is below for reference
document.getElementById('myIFrame').class = ShowMe;
//or this which will work
//document.getElementById("myIFrame").className = "ShowMe";
}
};
}
else
{
iframe.onload = function(){
//not sure if your code works but it is below for reference
document.getElementById('myIFrame').class = ShowMe;
//or this which will work
//document.getElementById("myIFrame").className = "ShowMe";
};
}
</script>
Based on the code found here.

You could do this within the iframe:
window.onload = function () {
window.frameElement.className = 'ShowMe'; // 'ShowMe' or what ever you have in ShowMe variable.
}
Since you've tagged your question with [jquery], I assume you have executed the code within $(document).ready(). It is fired when the DOM is ready, i.e. it uses native DOMContentLoaded event (if available). window.onload is fired, when all resources on the page are ready.

Open a new tab with custom HTML instead of a URL

I'm making a Greasemonkey script and would like to open a new tab which will not display a URL but some HTML that is part of the script. So basically I want to do something like this (which is obviously not working):
window.open('<html><head></head><body></body></html>');
or
GM_openInTab('<html><head></head><body></body></html>');
Any hints are welcome!

You can do this:
var newWindow = window.open();
and then do
newWindow.document.write("ohai");

April 2021 Edit: This answer is obsolete now. Chrome banned loading data URIs into the top window, and the iframe solution doesn't work for me in Firefox.
Original answer: If the other answer gives you Error: Permission denied to access property "document", see this question about how to handle same-origin policy problems, or this one.
Or, quick and dirty, use a data URI:
var html = '<html><head></head><body>ohai</body></html>';
var uri = "data:text/html," + encodeURIComponent(html);
var newWindow = window.open(uri);

I am putting this here just in case anyone will need this. I have made a way to solve this problem, i created a little website (https://tampermonkeykostyl.dacoconutnut.repl.co) that you can give html to in the hash! Example: (you might need to middle click the url for it to actually open in new tab)
// get url
var el = document.getElementById("url");
// make html
var HTML = `
<h1>hi</h1>
if you can see this then cool <br>
<i>this should be italic</i> and <b>this should be bold</b>
`;
// insert html after the link to demonstrate
document.body.insertAdjacentHTML("beforeend", HTML); // https://stackoverflow.com/a/51432177/14227520
// set url href
el.href = "https://tampermonkeykostyl.dacoconutnut.repl.co/#" + encodeURI(HTML);
// make it open in new tab
el.target = "_blank";
<a id="url">Click here to display following HTML in a link (see js):</a>

Let's say you have a .html file locally stored. What you can do is this:
var newWindow = window.open();
newWindow.document.location.href = "/path/to/html/file";

Reload iframe src / location with new url not working in Safari

I have a page that loads with initially just a form within an iframe, something like this:
<iframe id="oIframe" ...src='somePage>'
<form ... />
</iframe>
When you click a button in the form, some javascript is invoked that builds a url and then I want to do the following:
frame.src = 'somePage?listId=1';
This works in IE to "reload" the frame with the new contents.
However, in Safari this does not work.
I have jQuery available, but I don't want to replace the existing iframe because there are events attached to it. I also can not modify the id of the iframe because it is referenced throughout the application.
I have seen some similar issues but no solutions that seem to work well for my exact issue.
Any assistance anyone can provide would be great!

Some browsers don't use "src" when calling the javascript object directly from the javascript hierarchy and others use "location" or "href" instead of "src" to change the url . You should try these two methods to update your iframe with a new url.
To prevent browser cache add a pseudo-random string like a number and timestamp to the url to prevent caching. For example add "new Date().getTime()" to your url.
Some calling examples:
document.getElementById(iframeId).src = url;
or
window.frames[iframeName].location = url;
I recommend the first option using document.getElementById
Also you can force the iframe to reload a page using
document.getElementById(iframeId).reload(true);

So the answer is very simple:
1. put a <div id="container"> </div> on your page
2. when reload needed use following jQuery:
$("#container").empty();
$("#container").append("<iframe src='" + url + "' />");
and that's it.
Of course there is more elegant way of creating DOM with jQuery but this gives the idea of "refreshing" iframe.
Works in FF18, CH24, IE9, O12 (well it's jQuery so it will work almost always :)

I found a better solution (albeit not paticularly eloquent) for this using jQuery.ajax:
jQuery.ajax({
type: 'GET',
url: "/somePage?someparms",
success: function() {
frameObj.src = "/somePage?someparms";
}
});
This forces the DOM to be read within the frame object, and reloads it once the server is ready to respond.

Try this
form.setAttribute('src', 'somePage?listId=1');

Well, I was able to find what appears to be a feasible solution -- it's a work in progress, but this is basically what I ended up doing:
var myFrame = document.getElementById('frame'); // get frame
myFrame.src = url; // set src attribute of original frame
var originalId = myFrame.id; // retain the original id of the frame
var newFrameId = myFrame.id + new Date().getTime(); // create a new id
var newFrame = "<iframe id=\"" + newFrameId + "\"/>"; // iframe string w/ new id
myFrameParent = myFrame.parentElement; // find parent of original iframe
myFrameParent.innerHTML = newFrame; // update innerHTML of parent
document.getElementById(newFrameId).id = originalId; // change id back

I ran into this issue using React, passing the key as props.src solved it
const KeyedIframe = ({children, ...props}) => <iframe key={props.src} { ...props}>
{children}
</iframe>

JavaScript source file not loading in IE8 Popup

I have an issue where the JavaScript source file is loading in popup for IE6, Chrome, Firefox, Safari and Opera. But the same source file is not loading up in IE8.
As a result of this the HTML is not being replaced in the Popup and I am getting an error in IE8 popup saying tinyMCE is not defined
I have referred to Formatting this JavaScript Line and solved issue on all browsers except IE8.
The JavaScript function is as follows:
function openSupportPage() {
var features="width=700,height=400,status=yes,toolbar=no,menubar=no,location=no,scrollbars=yes";
var winId=window.open('','',features);
winId.document.open();
winId.document.write('<html><head><title>' + document.title + '</title><link rel="stylesheet" href="../css/default.css" type="text/css">\n');
var winDoc = winId.document;
var sEl = winDoc.createElement("script");
sEl.src = "../js/tiny_mce/tiny_mce.js";/*TinyMCE source file*/
sEl.type="text/javascript";
winDoc.getElementsByTagName("head")[0].appendChild(sEl);
winId.document.write('<script type="text/javascript">\n');
winId.document.write('function inittextarea() {\n');
winId.document.write('tinyMCE.init({ \n');
winId.document.write('elements : "content",\n');
winId.document.write('theme : "advanced",\n');
winId.document.write('readonly : true,\n');
winId.document.write('mode : "exact",\n');
winId.document.write('theme : "advanced",\n');
winId.document.write('readonly : true,\n');
winId.document.write('setup : function(ed) {\n');
winId.document.write('ed.onInit.add(function() {\n');
winId.document.write('tinyMCE.activeEditor.execCommand("mceToggleVisualAid");\n');
winId.document.write('});\n');
winId.document.write('}\n');
winId.document.write('});}</script>\n');
window.setTimeout(function () {/*using setTimeout to wait for the JS source file to load*/
winId.document.write('</head><body onload="inittextarea()">\n');
winId.document.write(' \n');
var hiddenFrameHTML = document.getElementById("HiddenFrame").innerHTML;
hiddenFrameHTML = hiddenFrameHTML.replace(/&/gi, "&");
hiddenFrameHTML = hiddenFrameHTML.replace(/</gi, "<");
hiddenFrameHTML = hiddenFrameHTML.replace(/>/gi, ">");
winId.document.write(hiddenFrameHTML);
winId.document.write('<textarea id="content" rows="10" style="width:100%">\n');
winId.document.write(document.getElementById(top.document.forms[0].id + ":supportStuff").innerHTML);
winId.document.write('</textArea>\n');
var hiddenFrameHTML2 = document.getElementById("HiddenFrame2").innerHTML;
hiddenFrameHTML2 = hiddenFrameHTML2.replace(/&/gi, "&");
hiddenFrameHTML2 = hiddenFrameHTML2.replace(/</gi, "<");
hiddenFrameHTML2 = hiddenFrameHTML2.replace(/>/gi, ">");
winId.document.write(hiddenFrameHTML2);
winId.document.write('</body></html>\n');
winId.document.close();
}, 300);
}
Additional Information:
Screen shot of the page
Rendered HTML
Original JSPF
please help me with this one.

Why are you using actual DOM functions to add the <script> tag that includes tinymce.js but everything else is using document.write?
I think that's also where your problem lies, as <head> is within <html>, which is not yet closed where you want to append said <script> tag.
Otherwise, you could use the existing <script> tag in the popup to add the code that includes the required external javascript file. If that makes any sense.
So, basically I'm saying, try it the same way as everything else is in your script, using document.write.
(quick addition) I'm not saying this is the 'best' way to do this, I would recommend creating an actual page instead of dynamically creating one in the popup. But in this scenario, I think what I wrote earlier might solve the problem you are having.