how to check query parameters in javascript code example

Example 1: javascript read query parameters

// example url: https://mydomain.com/?fname=johnny&lname=depp
const queryString = window.location.search;
console.log(queryString);
// ?fname=johnny&lname=depp

const urlParams = new URLSearchParams(queryString);

const firstName = urlParams.get('fname');
console.log(firstName);
// johnny

const lastName = urlParams.get('lname');
console.log(lastName);
// depp

Example 2: js get query param

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

Example 3: get url query params js

const urlParams = new URLSearchParams(window.location.search);
const myParam = urlParams.get('myParam');