Redirecting to a relative URL in JavaScript

You can do a relative redirect:

window.location.href = '../'; //one level up

or

window.location.href = '/path'; //relative to domain

If you use location.hostname you will get your domain.com part. Then location.pathname will give you /path/folder. I would split location.pathname by / and reassemble the URL. But unless you need the querystring, you can just redirect to .. to go a directory above.