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How to use Javascript to change href and html text?

So I've got this little piece of HTML that I have zero access to, and I need to change the URL of where it's linking, to somewhere else.
Now I've looked around, and I've tried different approaches and non seem to work so I must be doing something wrong.
the Html code:
<div class="manageable-content" data-container="edit_register_ind_container">
<a class="entry-text-link secondary-step step-button" id="register_ind_container" href="oldurl">Register</a>
</div>
First I wanted to try something that seemed easier, which was to change the displayed text "Register" to "Start a Fundraiser"
This is what I have got for that part:
// url manipulation
$(document).ready(function(){
$("#register_ind_container").click(function(){
$("#manageable-content a").text('Start a Fundraiser');
});
$("#register_ind_container").attr("href", "http://google.ca");
});
No luck so far for any of it.
a little background information:
I am using a platform called Luminate/Blackbaud, its a CMS with a weird set up. header tags and stuff like that go in a different place than the html body and the css is somewhere else as well (but I'm just using ftp to reference it in the header).
How I'm referencing the javascript code.
<script type="text/javascript" src="../mResonsive/js/urlmanipulation.js"></script>
My css works so I'm certain this should to, but I just don't know why it isn't.
All suggestions welcome (except for asking for the html access because I have, 3 weeks ago lol)
Thank you for your time!

I saw your both code :
$("#register_ind_container").attr("href", "http://google.ca");
This line will execute on page load so href should be changed on load
$("#register_ind_container").click(function(){
But when you performing this click on Id
it wont work because at that instance this id associated with an hyperlink
so hyperlink having the default subset rules
for Overriding this you can try
$("#register_ind_container").click(function(e){
// custom handling here
e.preventDefault();
$(this).text('Start a Fundraiser');
});
But this is also not a Good Practice. Hope this helps !

$(document).ready(function(){
$("#register_ind_container").click(function(){
$(this).text('Start a Fundraiser');
$(this).attr("href", "http://google.ca");
});
});

You are changing the URL outside the click event.. Wrap it inside the click event.. Also make use of $(this)
// url manipulation
$(document).ready(function(){
$("#register_ind_container").click(function(){
$(this).text('Start a Fundraiser').attr("href", "http://google.ca");
});
});

jQuery + Modernizer - Do not display a div if javascript is disabled? (See Code)

I am trying to enhance the menu of my website a bit by making use of the jQuery accordion plugin:
http://jqueryui.com/accordion/
This works perfectly fine and i think that it is a great plugin to make use of... However, i have noticed that it requires a specific layout in order to achieve these results:
<div id="accordion">
<h3>Section 1</h3>
<div>
<p>
ETC...
</p>
</div>
NB: repeated for every result
</div>
Now this is a bit of a problem in that when javascript is disabled, the entire output of this menu is displayed (all categories and containing information).
This is simply too much information to be output all at once and this is the reason that it has been broken up with PHP in the first place. In essence it would look like this:
// No category selected
* Fruits
* Vegetables
// Category selected
o Fruits
- Apples
- Oranges
* Vegetables
// Javascript Disabled
o Fruits
- Apples
- Oranges
* Vegetables
- Potatoes
- Onions
So what i would like to do, is provide an alternate means of navigation for users that have disabled javascript (the old menu that is fully functional and works regardless).
I currently make use of a few options in modernizer:
http://modernizr.com/
To increase browser support on some CSS properties i have used. I am aware that it can be used to detect if javascript is enabled by appending a class "js" to the body tag.
So with that, i decided to try and wrap the old menu within a containing div, and the new menu within a containing div. My idea is that i can then these divs with display: none;.
Before i carry on, i am really just guessing here so if i am going about this the wrong way... I would appreciate it if someone could point me in the right direction. With that out of the way, i found an article on stackoverflow that relates to this:
PHP & <noscript> combination to detect enabled JavaScript in browser
And with my very limited knowledge of jQuery have adapted it slightly to fit what i hope to achieve:
<script type="text/javascript">
$(document).ready(function(){ // Use jQuery!
// Remove the no-js and add the js (because JS is enabled (were using it!!)
$("body").removeClass("no-js").addClass("js");
})
// Put it in a var so you dont traverse the DOM unnecessarily.
var useJS = $("body").hasClass("js");
if(useJS){ // true or false if <body> has class JS.
// JS Enabled
$("#oldMenu").css("display", "none");
$("#newMenu").css("display", "inline");
} else {
// JS NOT enabled
$("#newMenu").css("display", "none");
$("#oldMenu").css("display", "inline");
}
</script>
Now the problem I am facing is that i cannot seem to get this script to register or make any visible difference. When i look at the body tag in the source there is no class on the body tag. The menu is not triggering as i thought it would and i am now after quite some time... Very confused.
If anyone could offer me some assistance, advice, information or indication that would help me to solve this current issue, i would really, REALLY appreciate that!
Thank you for taking the time to read through my line story! :)
EDIT:
#RomainPaulus suggested this and it works:
<script type="text/javascript">
$(document).ready(function(){ // Use jQuery!
// Remove the no-js and add the js (because JS is enabled (were using it!!)
$("body").removeClass("no-js").addClass("js");
// Put it in a var so you dont traverse the DOM unnecessarily.
var useJS = $("body").hasClass("js");
if(useJS){ // true or false if <body> has class JS.
// JS Enabled
$("#oldMenu").css("display", "none");
$("#newMenu").css("display", "inline");
} else {
// JS NOT enabled
$("#newMenu").css("display", "none");
$("#oldMenu").css("display", "inline");
}
})
</script>

Kenneth's response explains a lot, but I have noticed something else. Your code
var useJS = $("body").hasClass("js");
is executed before
$(document).ready(function(){ // Use jQuery!
// Remove the no-js and add the js (because JS is enabled (were using it!!)
$("body").removeClass("no-js").addClass("js");
})
You should put everything inside the $(document).ready(function(){ ... })
So I guess that explains why your code doesn't work.

The problem you face here is that, obviously when Javascript is not enabled, you're Javascript is not executing.
What you need to is hide the DIV by default with CSS. Then, when your page loads, show it through JS.
Javascript disabled => Div stays hidden, because no code is executed
Javascript enabled => div is hidden on load, but the script shows it
Also, if Javascript is disabled, Modernizr won't help, since it's a JavaScript library.

javascript read html comment after closing html tag

I know you shouldn't put anything after the closing 'html' tag. Tell SharePoint about it...
[...]
</body>
</html><!-- Rendered using cache profile:Public Internet (Purely Anonymous) at: 2013-06-06T12:57:10 -->
This is what the SharePoint output caching debug information looks like. I want this hidden comment to be visible on every page. Switching to source view and going to the end of the file makes me tired.
In an effort to not reinvent the wheel I figured it would be the smartest choice to add a piece of javascript code to my masterpage which copies the comment to a location (within the page) of my choosing.
Any idea on how I get hold of the comment via javascript? jquery is ok.

You can get the nodeValue of the Comment Object and append it to Body Element:
$(document).ready(function() {
var comment = $('html').prop('nextSibling').nodeValue;
$('<div/>').html(comment).appendTo('body');
});
http://jsbin.com/arodiz/2/edit

Simply document.lastChild.nodeValue will do the trick.
(Assuming you run it after the DOM is ready)
edit
I took the liberty of modifying the code from undefined's answer :)
$(function(){
$('body').append(document.lastChild.nodeValue);
});
http://jsbin.com/arodiz/3/edit

using javascript to output html

I have a javascript link that references another .js file. I've been trying to output an image (for testing purposes), but I'm not sure what is the correct way to go about this.
alert("beginning");
//var link = $("<a href='http://juixe.com'>Hello, <b>World</b>!</a>");
//$('body').append(link);
//document.write("hi");
//document.write("<div><img src='http://s3-media2.ak.yelpcdn.com/bphoto/xqC6Iy5mOLb_8mwMKGv8_w/l.jpg' /></div>");
alert("before function");
(function(){
alert("middle");
var links = $("<a href='http://juixe.com'>Hello, <b>World</b>!</a>");
$('body').append(links);
alert("after middle");
//alert($("img").attr("id"));
document.write("hi");
document.write("<div><img src='http://s3-media2.ak.yelpcdn.com/bphoto/xqC6Iy5mOLb_8mwMKGv8_w/l.jpg' /></div>");
alert("end");
}());
I was able to alert beginning, all the way to middle. It seems like var links doesn't work. I'm trying to use HTML inside this .js file. Essentially, I want to be able to do some modal window, but I'm trying to output images for testing purposes right now.
Also, is this the correct way for jquery?
Thanks in advance!

Your code is a strange mix. Jquery code almost always needs to run after the page has loaded whereas document.write can never be used after the page has loaded.
You are incorrectly wrapping your jQuery in an immediate executing function. The proper wrap for jQuery is within :
$(document).ready(function(){
/* html of page exists now, run jQuery here */
});// notice no extra "()" after close brace as you have
or the shorthand version that does same thing:
$(function(){
/*html of page exists now, run jQuery here */
});// notice no extra "()" after close brace as you have
If you change all of your document.write to $('body').append(/* your content*/) and place all your code inside the above wrappers you will have much better success.
There is a wealth of information within the jQuery documentation and API. A good start point with more detail about the wrapping I've shown can be found here: http://docs.jquery.com/How_jQuery_Works

Your biggest problem is addressed in the other answer. You are improperly wrapping JQUery so essentially JQuery is not ready to be executed when it reaches your append statement.
It is unnecessary to wrap your html in a JQuery object (in this case):
var links = "<a href='http://juixe.com'>Hello, <b>World</b>!</a>";
$('body').append(links);
or simply:
$('body').append("<a href='http://juixe.com'>Hello, <b>World</b>!</a>");
In terms of best practice, using append, appendTo or prepend are good options depending on the context. You could also use:
$("body").html("/*Your HTML here*/")
At the end of the day you have many options but avoid document.write at all cost. The non-JQuery approach would be to use .innerHTML with a DOM element. This is also a good approach in the absence of JQuery.

How can you see which Javascript script generated a certain html line?

I have some crazy app done almost 100% by manipulating the DOM and I find myself in the unfortunate position of changing something in it. As there are probably around 100 different scripts that do God knows what, I have no clue in which file should I look to make my changes. So, I want to ask, is there a way (using Firebug maybe or something similar) to know where a specific piece of html was generated? I'm a C developer, so I'm not very good at this, it drives me crazy.

Are all the elements added at the page load, or partially in the response to the user input? (clicking etc.)
for stuff added with the response to your actions, you can use Firebug's "Break On Next" button in the "Script" tab. To active BON you have to click it, or, in just-shipped Firebug 1.10.0a8, use keyboard shortcut ALT-CTRL-B (useful when you have event listeners bound to mouse movements). Then, when any piece of JS is going to be executed in reaction to your click etc., you will hit a breakpoint.
for stuff added at page load time, you may use the trick of extending the native functions (this might sound crazy - yeah it is, don't do it in production!) like appendChild, insertBefore, replaceChild. Just insert the appropriate code at the very top of your main HTML file, so all the code below will "see" the change.
Unfortunately, this does not work in Firefox due to a bug. But works in Opera and I guess in Chrome as well.
When you extend the native function, you can inject any code before really adding the node to the page. For instance, call console.log or create a breakpoint, to inspect the current page state. You can try playing with breakpoints to see the available variables properties inside those function to adjust what you push to console.log.
For this code:
<!doctype html>
<html>
<head>
<script type="text/javascript">
// this should work in Firefox but it does not -- https://bugzilla.mozilla.org/show_bug.cgi?id=618379
// works at least in Opera, probably Chrome too
Node.prototype._appendChild = Node.prototype.appendChild;
Node.prototype.appendChild = function(child) {
console.log("appending " + child + " to " + this);
return this._appendChild(child); // call the original function with the original parameters
}
// this works in Firefox
document._createElement = document.createElement;
document.createElement = function(tagName){
console.log("creating " + tagName);
return this._createElement(tagName);
}
</script>
</head>
<body>
<script type="text/javascript">
var p = document.createElement("p");
p.appendChild( document.createTextNode("abc"));
document.body.appendChild(p);
</script>
</body>
</html>
Opera outputs:
creating p appendChild.html:14
appending [object Text] to [object HTMLParagraphElement] appendChild.html:7
appending [object HTMLParagraphElement] to [object HTMLBodyElement] appendChild.html:7
To overcome the weakness of Firefox (that you can't override appendChild), you may use the trick: place the code below instead in the top of your HTML
<script>
Node.prototype._appendChild = function(child) {
console.log("appending " + child + " to " + this);
return this.appendChild(child)
};
</script>
and then, use Fiddler proxy by creating auto-responders (WMV tutorial, 9.9 MB) where you manually replace all calls to .appendChild with ._appendChild (you can use Notepad++ for "find replace in all opened files"). Creating auto-responders and hand-tampering requests can be mundane, but it's extremely powerful. To quickly create auto-responder rule, load the page when Fiddler is active, then drag'n'drop files as in the picture below. For each file, right click and choose "Generate File" from menu (this will put a file on the desktop) or create a file by yourself in different location. (it's good to open Fiddler-generated files and remove response headers from them; BTW "Generate file" puts real contents only if the response header was 200, so make sure to load the page with CTRL-F5 to skip the cache).

In Chrome you can inspect an element and right click on it. This menu gives you some options to break when something below the element is changed or when it's own attributes change. Maybe one of those breakpoints will find what you are looking for?

Assuming you've got access to the raw (hopefully un-minified/obfuscated) JS files, maybe just search them for text strings related to DOM manipulation and/or attributes of the node you're trying to find the creation of? I'd try things like "appendChild" "createElement" and the node's ID/class names.
You could also set break points all over the script files, and step through them as the page loads to help you narrow down where to look. Might help to start by just "pausing" the JS execution and stepping through from the very beginning.
If you can share the code (a link to the live site would do fine) I'd be happy to take a look.

If you are using the jQuery framework in your javascript to make the DOM changes then you may find the fireQuery plugin for FireBug in the firefox browser may get you the information you need.
Example:
It adds additional information to the standard HTML view by superimposing additional jquery element information to the display to provide a deeper insight into how your javascript is amending the page content.
I hope that helps you out.