Get, set, modify url parameters in a query string with JavaScript.

readme.md

Get the queryString module from: https://github.com/sindresorhus/query-string

query-string-example.js

// Get the queryString module from:
// https://github.com/sindresorhus/query-string

console.log(location.href);
// http://sindresorhus.com/?foo=bar

console.log(location.search);
// ?foo=bar

var parsed = queryString.parse(location.search);
console.log(parsed);
// {foo: 'bar'}

parsed.foo = 'unicorn';
parsed.ilike = 'pizza';

location.search = queryString.stringify(parsed);

console.log(location.search);
// ?foo=unicorn&ilike=pizza

Browsers now have a URLSearchParams class that can help to parse search params. It has been around in modern browsers for almost 4 years now: https://caniuse.com/?search=URLSearchParams

let queryParams = new URLSearchParams(window.location.search)
queryParams.set('page', '1')
queryParams.toString()
queryParams.get('page')
queryParams.delete('page')

Yup. query-string does have some benefits in that it's flexible in how it handles arrays.