url.js

$ node
> const url = require('url');
undefined
> const a = url.parse('http://amazon.com/search?page=10&per=5');
undefined
> a
Url {
  protocol: 'http:',
  slashes: true,
  auth: null,
  host: 'amazon.com',
  port: null,
  hostname: 'amazon.com',
  hash: null,
  search: '?page=10&per=5',
  query: 'page=10&per=5',
  pathname: '/search',
  path: '/search?page=10&per=5',
  href: 'http://amazon.com/search?page=10&per=5' }
> a.toString();
'[object Object]'
> a.search = '?aslkdjhasdljfk';
'?aslkdjhasdljfk'
> a
Url {
  protocol: 'http:',
  slashes: true,
  auth: null,
  host: 'amazon.com',
  port: null,
  hostname: 'amazon.com',
  hash: null,
  search: '?aslkdjhasdljfk',
  query: 'page=10&per=5',
  pathname: '/search',
  path: '/search?page=10&per=5',
  href: 'http://amazon.com/search?page=10&per=5' }
> url.format(a)
'http://amazon.com/search?aslkdjhasdljfk'