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Access params in URL in JS (React)

I have this URL : http://localhost:3000/#access_token=90kzif5gr8plhtl9286sc1z1qbgoj3&scope=moderation%3Aread&token_type=bearer
and I want to get from this only the access_token value 90kzif5gr8plhtl9286sc1z1qbgoj3
How can I do it in Javascript please ?

Here is the solution:
const url = "http://localhost:3000/#access_token=90kzif5gr8plhtl9286sc1z1qbgoj3&scope=moderation%3Aread&token_type=bearer";
const hash = url.substring(url.indexOf('#') + 1);
let result = hash.split('&')
result = result[0].split('=')
console.log(result[1]); // "90kzif5gr8plhtl9286sc1z1qbgoj3"
Happy coding :)

As you can see in this the simplest way is :
var url_string = "http://localhost:3000/#access_token=90kzif5gr8plhtl9286sc1z1qbgoj3&scope=moderation%3Aread&token_type=bearer";
var url = new URL(url_string);
var c = url.searchParams.get("access_token");

You can try this by splitting the URL string into three strings and using the access token directly then
var url=http://localhost:3000/#access_token=90kzif5gr8plhtl9286sc1z1qbgoj3&scope=moderation%3Aread&token_type=bearer
var firstHalf=url.split('#access_token=')[1];
var required_token=firstHalf.split("&scope")[0];
print the value of required_token.
Required result will be "90kzif5gr8plhtl9286sc1z1qbgoj3"

your text is the string contained in window.location.hash, and a string of that format can be easily turned into a properly decoded key/value store using the URLSearchParams constructor:
const token = new URLSearchParams(window.location.hash).get("access_token");

Javascript - Remove some part of URL and Add Query after

How can I remove some part of an url and add some query before returning it?
Example:
locahost:8080/product/orders/1.
I want to remove the orders/1 and add /?query="sample".

Use replace function:
location.replace("locahost:8080/product/?query='sample'")

You can get the url by simply doing window.location.href. You can then edit it by copying it to some new var newURL = window.location.href;
newUrl = newUrl.replace('/orders/1', '/?query=\"sample\"');
window.location.href = newUrl; // execute this to pass on the parameters to the current page.

Suppose you have url like this in variable1, let say like this
var variable1 = 'http://locahost:8080/product/orders/1'; //here you can get the actual browser url using `window.location.href`and assign it to `variable1`
just use replace function:
var final_text = variable1.replace('/orders/1','?query=sample');
you will get the following output, you do console.log(final_text);
http://locahost:8080/product?query=sample

You can try something like
var url = window.location.href;
var query = "somestring" ;
window.location.replace(url + "&" + somestring);
removing the / pieces:
var newloc = url.substring(0, url.search("/")) + query;
window.location.replace(newloc);

Get string between / in URL

Let's say I have the following URL https://www.google.com/en-gb/test-page.
I'm trying to extract whatever is after the domain name, in this case en-gb, however, with my approach, it's currently spitting out the entire slug.
I.e.
var pathname = window.location.pathname.substr(1);
console.log(pathname);
Will log out:
en-gb/test-page
How can I get it so that it only log out en-gb?

Just split the url with the / delimiter
const url = 'https://www.google.com/en-gb/test-page';
console.log(url.split('/')[3]);

You can use URL.pathname
Code:
const url = new URL('https://www.google.com/en-gb/test-page');
const str = url.pathname.split('/')[1];
console.log(str);

Split on a slash:
var [pathname] = window.location.pathname.substr(1).split("/");

Javascript how to remove parameter from URL sting by value?

How to remove parameters with value = 3 from URL string?
Example URL string:
https://www.example.com/test/index.html?param1=4&param2=3&param3=2&param4=1&param5=3

If you are targeting browsers that support URL and URLSearchParams you can loop over the URL's searchParams object, check each parameter's value, and delete() as necessary. Finally using URL's href property to get the final url.
var url = new URL(`https://www.example.com/test/index.html?param1=4&param2=3&param3=2&param4=1&param5=3`)
//need a clone of the searchParams
//otherwise looping while iterating over
//it will cause problems
var params = new URLSearchParams(url.searchParams.toString());
for(let param of params){
if(param[1]==3){
url.searchParams.delete(param[0]);
}
}
console.log(url.href)

There is a way to do this with a single regex, using some magic, but I believe that would require using lookbehinds, which most JavaScript regex engines mostly don't yet support. As an alternative, we can try splitting the query string, then just examining each component to see if the value be 3. If so, then we remove that query parameter.
var url = "https://www.example.com/test/index.html?param1=4&param2=3&param3=2&param4=1&param5=3";
var parts = url.split(/\?/);
var params = parts[1].replace(/^.*\?/, "").split(/&/);
var param_out = "";
params.forEach(function(x){
if (!/.*=3$/.test(x))
param_out += x;
});
url = parts[0] + (param_out !== "" ? "?" + param_out : "");
console.log(url);

You could use a regular expression replace. Split off the query string and then .replace &s (or the initial ^) up until =3s:
const str = 'https://www.example.com/test/index.html?param1=4&param2=3&param3=2&param4=1&param5=3';
const [base, qs] = str.split('?');
const replacedQs = qs.replace(/(^|&)[^=]+=3\b/g, '');
const output = base + (replacedQs ? '?' + replacedQs : '');
console.log(output);

How to get first two URL path segments?

How to get first two parts of the URL using AngularJS?
For example, I would like to get the two first path of this URL (as admin/password/):
http://localhost:3000/admin/password/57045b10eba5ca1dfd01a8fc4adb4f6c4efc6454b9454514

split the url on "/"
url = window.location.href.split("/")
now you have each word in a sepperate array item, then you can combine them into one string like
console.log(url[0] + url[1] + url[2]);

From Angular $location service:
url([url]);
Return URL when called without any parameter.
Use it like this:
$scope.currentUrl = $location.url();
If you don't need the whole URL, just split it.

You can use URL to get the pathname, then split on / and take the 2 segments you want:
var url = "http://localhost:3000/admin/password/57045b10eba5ca1dfd01a8fc4adb4f6c4efc6454b9454514";
var pathParts = new URL(url).pathname.split('/'); //["", "admin", "password", "57045b10eba5ca1dfd01a8fc4adb4f6c4efc6454b9454514"]
pathParts.slice(1, 3).join('/') + '/'; //"admin/password/"

You can do it using RegExp.
var str = 'http://localhost:3000/admin/password/57045b10eba5ca1dfd01a8fc4adb4f6c4efc6454b9454514';
var reg = str.match(/(?!:\d+)(\/\w+)(\/\w+)/g);
console.log(reg.toString().split('/').slice(1));