How to detect URL changes with jQuery

Question

How can jQuery detect changes to a url?

For example: If a user goes to a page site.com/faq/ nothing shows, but if he goes to site.com/faq/#open

Answer 1

Try this:

if (window.location.hash) {
    // Fragment exists, do something with it
    var fragment = window.location.hash;
}

Just for reference, the part of a url specified by the # is called a 'fragment'