Parsing URL hash/fragment identifier with JavaScript
Here it is, modified from this query string parser:
function getHashParams() { var hashParams = {}; var e, a = /\+/g, // Regex for replacing addition symbol with a space r = /([^&;=]+)=?([^&;]*)/g, d = function (s) { return decodeURIComponent(s.replace(a, " ")); }, q = window.location.hash.substring(1); while (e = r.exec(q)) hashParams[d(e[1])] = d(e[2]); return hashParams;}
No JQuery/plug-in required
Update:
I'm now recommending the jQuery BBQ plugin as per Hovis's answer. It covers all hash parsing issues.
Update (2019)
Apparently there is now a URLSearchParams function - see answer from @Berkant
Check out: jQuery BBQ
jQuery BBQ is designed for parsing things from the url (query string or fragment), and goes a bit farther to simplify fragment-based history. This is the jQuery plugin Yarin was looking for before he put together a pure js solution. Specifically, the deparam.fragment() function does the job. Have a look!
(The support site I'm working on uses an asynchronous search, and because BBQ makes it trivial to tuck entire objects into the fragment I use it to 'persist' my search parameters. This gives my users history states for their searches, and also allows them to bookmark useful searches. Best of all, when QA finds a search defect they can link straight to the problematic results!)
Use URLSearchParams. Browser coverage: https://caniuse.com/urlsearchparams. It's fully supported in major browsers. Here is a polyfill if you need to use this on unsupported browsers.
How to read a simple key:
// window.location.hash = "#any_hash_key=any_value"const parsedHash = new URLSearchParams( window.location.hash.substr(1) // skip the first char (#));console.log(parsedHash.get("any_hash_key")); // any_value
Check out the Mozilla docs I linked above to see all of the methods of the interface.