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Why is window.location.href appending url again

In my code, I'm assigning the following:
window.location.href = "www.example.com/test";
But when the page actually loads, the browser URL is www.example.com/test/www.example.com/test. I'm not appending anything to the URL, and I'm not sure how its appending the URL again.

I think you're missing the "http" or "https" part. Have you tried the following?
window.location.href = "https://www.example.com/test";
or
window.location.href = "http://www.example.com/test";

Because you forgot the protocol. If you omit the protocol, window.location.href thinks you are trying to access a folder with the name of www.example.com, relative to the page you are currently on.
window.location.href="http://www.example.com/test/" will ensure that you access the external website www.example.com.
Hope this helps! :)

Check the way you are constructing the url, sometimes we miss the host, or enter the incorrect path
A safe way to change the URl is by making changes in the exisiting URL
first get the existing URL by
let exisitingURl = window.location.href;
now manipulate this url, for eg
exisitingURL = exisitingURL.replace('/auth', '/gateway');
now go to the url by
window.location.href = existingURL;

Change current URL then load

I want jquery to find and change the current URL you are visiting and load the new one. Lets say jquery is supposed to change the current "index.html" to "indexalt.html" on click and then load it. My idea is to use document.URL to get the current URL then slice off ".html" at the end and add for example "alt.html" to string. I'm very new to jquery and don't get it to work. There will be a lot of mistakes within my script probably:
$("#contact").on('click', function() {
var url=document.URL(str.slice(-7));
.load("url +"alt.html"");
I would really appreciate if anyone can tell me how to do it and how to write it down correctly in a whole. Thanks!

location.href returns the URL of the page. So, you can do this instead.
$("#contact").on("click", function() {
// Slicing 5 characters from the URL.
const url = location.href.slice(0, -5)
// Simply load the URL
location.href = url + "alt.html"
})

Jquery use a variable for a load query

I have a variable but I can't use it the way I want, please help!!
var test = window.location.hash;
$('div').load("test.php?id="+test);
The request keeps on being :
XHR finished loading: "http://localhost/test-site/test.php?id=".
and ignores my variable...

window.location.hash will begin with a # symbol, if it contains anything at all. You should strip it by adding .substr(1):
var test = window.location.hash.substr(1);
$('div').load("test.php?id="+test);
As it is, you are trying to load a url like test.php?id=#22, and since the hash is meaningless for AJAX purposes, it's being ignored by the .load method.

var test = window.location.hash.substring(1);

Change URL params or remove some part of URL with jquery

I have this URL and wanting to know how can I remove this section from it via a jQuery event.
Need to remove:
&activities_id=13&session_id=14&back=1
Original URL:
http://somedomain.com/ijob-css/index.php/search/default/index/area/act?query=&activities_id=13&session_id=14&back=1
EDIT
Sorry i think i havent included the most important section. I should change the Address BAR url not a normal string.
for example, if i have this url in the address bar - http://somedomain.com/ijob-css/index.php/ after change, address bar should contain http://somedomain.com/xxx=111, without page refreshing.

Do you mean you want the URL without the query parameter part? If then see if this helps.
var test = 'http://somedomain.com/ijob-css/index.php/search/default/index/area/act?query=&activities_id=13&session_id=14&back=1';
alert(test.substring(0, test.indexOf('?')));
If you want until first query parameter name then just seek until index of &
Update :
If you are using HTML5 then what you ask is possible. Check browser history manipulation. You can find details about this here.
I believe replaceState() is the answer for your problem. However it is not supported in all browsers/versions. History.js wraps HTML5 state features and provides additional support for HTML4 browsers.

Try this out
var new_url = old_url.substring(0, old_url.indexOf('&'));
Example: http://jsfiddle.net/SjrqF/
var url = 'youtube.com/watch?v=3sZOD3xKL0Y&feature=youtube_gdata';
url = url.slice( 0, url.indexOf('&') );
or:
Example: http://jsfiddle.net/SjrqF/1/
var url = 'youtube.com/watch?v=3sZOD3xKL0Y&feature=youtube_gdata';
url = url.split( '&' )[0];

var lastPart = 'query=';
var url = 'http://somedomain.com/ijob-css/index.php/search/default/index/area/act?query=&activities_id=13&session_id=14&back=1'.split(lastPart)[0] + lastPart;

var index = original_url.indexOf("=");
var new_url = original_url.substring(0,index+1);

See below.
var positionToSubstring = this.location.href.indexOf('&');
var newURI = this.location.href.substring(0, positionToSubstring);

use this
var test='http://somedomain.com/ijob-css/index.php/search/default/index/area/act?query=&activities_id=13&session_id=14&back=1';
test=test.split('&')[0];
console.log(test);
outputs
http://somedomain.com/ijob-css/index.php/search/default/index/area/act?query=

Replace links on page based on location.host and a cookie

I'm using jquery to rewrite a list of links on the page. If the location.host is NOT the vendor location.host AND the cookie isn't set to a specific value then it locates the links and rewrites them to the alternate values. The code I'm using works great in FF but not in IE7. Please help!
<script type="text/javascript">
// link hider
var hostadd = location.host;
var vendor = '172.29.132.34';
var localaccess = 'internal.na.internal.com';
var unlock = 'http://internal.na.internal.com/Learning/Customer_Care/navigation/newhire.html';
// link rewriter
$(document).ready (
function style_switcher(){
//if not a vendor or not accessing from lms reroute user to lms
if (hostadd != vendor && $.cookie("unlockCookie") != unlock){
var linkData = {
"https://www.somesite.com": "https://internalsite.com/something",'../Compliance/something/index.html':'../somethingelse.html'
};
$("a").each(function() {
var link = this.getAttribute("href"); // use getAttribute to get what was actualy in the page, perhaps not fully qualified
if (linkData[link]) {
this.href = linkData[link];
}
});
}
});
</script>

What you could do, if you insert the links dynamic, is store them in a data attribute like data-orglink="yourlink" which wouldnt be transformed by the browser, then check on that -and if its in the object array - change the href. Do you have access to creating the data attribute?
IE7 have problems with internal links, because it puts the host info on, before JS can reach the link..
http://jsfiddle.net/Cvj8C/9/
Will work in all, but IE7. So you need to use full paths if to use JS for this function :(
You had some errors in your JS.
But it seems to work fine?
See: http://jsfiddle.net/s4XmP/
or am i missing something? :)