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Javascript regex to replace ampersand in all links href on a page

I've been going through and trying to find an answer to this question that fits my need but either I'm too noob to make other use cases work, or their not specific enough for my case.
Basically I want to use javascript/jQuery to replace any and all ampersands (&) on a web page that may occur in a links href with just the word "and". I've tried a couple different versions of this with no luck
var link = $("a").attr('href');
link.replace(/&/g, "and");
Thank you

Your current code replaces the text of the element within the jQuery object, but does not update the element(s) in the DOM.
You can instead achieve what you need by providing a function to attr() which will be executed against all elements in the matched set. Try this:
$("a").attr('href', function(i, value) {
return value.replace(/&/g, "and");
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
link
link

Sometimes when replacing &, I've found that even though I replaced &, I still have amp;. There is a fix to this:
var newUrl = "#Model.UrlToRedirect".replace(/&/gi, '%').replace(/%amp;/gi, '&');
With this solution you replace & twice and it will work. In my particular problem in an MVC app, window.location.href = #Model.UrlToRedirect, the url was already partially encoded and had a query string. I tried encoding/decoding, using Uri as the C# class, escape(), everything before coming up with this solution. The problem with using my above logic is other things could blow up the query string later. One solution is to put a hidden field or input on the form like this:
<input type="hidden" value="#Model.UrlToRedirect" id="url-redirect" />
then in your javascript:
window.location.href = document.getElementById("url-redirect").value;
in this way, javascript won't take the c# string and change it.

How to store a template in an expression in Handlebars.js?

I want to place my templates on several places in the DOM without having to write the jQuery expression over and over again. I want to place my template in the DOM by just typing the variable/attribute {{template}} anywhere in the body.
Is this doable using Handlebars? If not, is there any other way for me to achieve this?

You need to use HandleBar helpers
handlebar_helpers
p.s. dont forget to use safestring else it will be escaped by default
Updating with answer based on ur comment
The link i provided did give out an excellent explanation. However please find below an example.
Assume your need to return a welcome message when a name is given
Handlebars.registerHelper('welcome', function(name) {
return new Handlebars.SafeString(
"<p>Hi "+name+", welcome to stackoverflow</p>"
);
});
Then calling
{{{welcome "sagittarius"}}} will return
Hi sagittarius, welcome to stackoverflow

Extract data from url with JavaScript

EDIT_2: I forgot to specify its for Android app, so i dont think this is any use, i made a new post instead :( Added Android TAG..
EDIT: Im making an Android App
I need help to extract a number from an url, generated by JavaScript!
Site is:
http://www.oddsportal.com/sure-bets/
And the path looks like this:
<span class="logos l60"> </span>
<div class="odds-nowrp" xodd="xzoxfxzox">2.62</div> // <- 2.62 is the numer i need
For full path see this screenshot:
What library would do this best? (I know Jsoup cant do it) I have searched a few like:
HtmlUnit
Java Script Engine
Apache Commons BSF
Rhino
But i cant really make sense of it or find any examples for android which look like my problem

or find any examples for android which look like my problem
You need it for android?
Pretty much any library allowing DOM traversing will allow you to do this providing you know how to find your value.
is this value exactly at the same position in DOM every time?
is it wrapped by an easy to identify element? i.e. with a static ID
are there any other value that look alike in the DOM that you don't want?
Based on that, using JQuery for example, you could select it like this :
$('.table-main td.center > a[href^="/bookmaker"] + div[xodd]')
or this:
$('.table-main tr:nth-child(3) div.odds-nowrp[xodd]')

Use Jquery:
var number = $(".odds-nowrp").text();

you can just use regex if you have the url already in escaped string format
reg = /[A-z\"\>\<=?()0-9 \/]*(\d+.\d+)[A-z\"\>\<=?()0-9 \/]*/
reg.exec(url)[1] // this will return your number
if it's already rendered and the xodd value doesn't change, you could do something like this
document.querySelectorAll('.odds-nowrp[xodd=xzoxfxzox]')[0].innerText

Javascript & HTML Getting the Current URL

Can anyone help me. I don't use Client-side Javascript often with HTML.
I would like to grab the current url (but only a specific directory) and place the results between a link.
So if the url is /fare/pass/index.html
I want the HTML to be pass

This is a quick and dirty way to do that:
//splits the document.location.href property into an array
var loc_array=document.location.href.split('/');
//have firebug? try a console.log(loc_array);
//this selects the next-to-last member of the array.
var directory=loc[loc.length-2]

url = window.location.href // Not particularly necessary, but may help your readability
url.match('/fare/(.*)/index.html')[1] // would return "pass"

There may be an easier answer, but the simplest thing I can think of is just to get the current URL with window.location and use some type of parsing to get which directory you are looking for.
Then, you can dynamically append the HTML to your page.

This may get you started:
var linkElement = document.getElementById("whatever");
linkElement.innerHTML = document.URL.replace(/^(?:https?:\/\/.*?)?\/.*?\/(.*?)\/.*?$/i,"$1");

JavaScript To Strip Page For URL

We have a javascript function we use to track page stats internally. However, the URLs it reports many times include the page numbers for search results pages which we would rather not be reported. The pages that are reports are of the form:
http://www.test.com/directory1/2
http://www.test.com/directory1/subdirectory1/15
http://www.test.com/directory3/1113
Instead we'd like the above reported as:
http://www.test.com/directory1
http://www.test.com/directory1/subdirectory1
http://www.test.com/directory3
Please note that the numbered 'directory' and 'subdirectory' names above are just for example purposes and that the actual subdirectory names are all different, don't necessarily include numbers at the end of the directory name, and can be many levels deep.
Currently our JavaScript function produces these URLs using the code:
var page = location.hostname+document.location.pathname;
I believe we need to use the JavaScript replace function in combination with some regex but I'm at a complete loss as to what that would look like. Any help would be much appreciated!
Thanks in advance!

I think you want this:
var page = location.href.substring(0,location.href.lastIndexOf("/"));

You can use a regex for this:
document.location.pathname.replace(/\/\d+$/, "");
Unlike substring and lastIndexOf solutions, this will strip off the end of the path if it consists of digits only.

What you can do is find the last index of "/" and then use the substring function.

Not sure you need a regex if you're just pulling off the last slash + content.
http://www.w3schools.com/jsref/jsref_lastIndexOf.asp
I'd probably use that to search for the last "/" character, then do a substring from the start of the string to that index.

How about this:
var page = location.split("/");
page.pop();
page = page.join("/");

I would think you need to use the .htaccess with rewrite rules to change the look of the url, however I am still looking to see if this is available to javascript. Will repost when I find out more
EDIT*
the lastIndexOf would only give you the position, therefor you would still need to replace. ex:
var temp = page.substring(page.lastIndexOf("/"),page.length-1);
page = page.replace(temp, "");
unfortunately I'm not that advanced in my coding so there is probably more efficient coding in the other answers. Sorry for any inconveniences with my initial answer.