[javascript snippet] get query string parameter on url

queryStringParse.js

    //returns query parameters as object
    function getQueryString() {
        var result = {}, queryString = location.search.slice(1),
            re = /([^&=]+)=([^&]*)/g, m;

        while (m = re.exec(queryString)) {
            result[decodeURIComponent(m[1])] = decodeURIComponent(m[2]);
        }

        return result;
    }