how to get url query string value in javascript code example

Example 1: js get query param

const queryString = window.location.search;
const parameters = new URLSearchParams(queryString);
const value = parameters.get('key');

Example 2: javascript reading query parameter

// example url: https://mydomain.com/?fname=johnny&lname=depp
const urlParams = new URLSearchParams(window.location.search);
const firstName = urlParams.get('fname'); // johnny