How can you check for a #hash in a URL using JavaScript?

Question

I have some jQuery/JavaScript code that I want to run only when there is a hash (#) anchor link in a URL. How can you check for this character using JavaScript?

Answer 1

Partridge and Gareths comments above are great. They deserve a separate answer. Apparently, hash and search properties are available on any html Link object:

test

Or

SAY FOO

Should you need this on a regular string variable and happen to have jQuery around, this should work:

var mylink = "foo.html?bar#quz";

if ($('').get(0).search=='bar')) {
    // do stuff
}

(but its maybe a bit overdone .. )