const myURL = new URL('https://www.website.com/orders/index.html?id=8372&age=43')
myURL.searchParams.append('state', 'California')
const q = myURL.searchParams;
console.log(q);
q.forEach((value, key) => {
console.log(key, value);
});
/*
run:
URLSearchParams { 'id' => '8372', 'age' => '43', 'state' => 'California' }
id 8372
age 43
state California
*/