Retrieve specific hash tag's value from url

Question

In raw Javascript, how would one go about checking that a specific hash tag exists in a url, then grab the value?

Example: http://www.example.com/index.html#hashtag1

Answer 1

I use this, and it works just fine for me. It's a little adjusing to a line I picked up somewhere, I believe on SO.

getURLHashParameter : function(name) {

        return decodeURI(
            (RegExp('[#|&]' + name + '=' + '(.+?)(&|$)').exec(location.hash)||[,null])[1]
        );
    },