More modular version of mini Sammyjs without jQuery, now with the Routing extracted and independent, for further usage outside of the window.history part.

Example.js

        Path.setup(new Route(function () {
            this.get('/yadda', function () {
                document.querySelector('h1').innerHTML = "OMG";
            });
            this.get('/yaddaweeehhh', function () {
                document.querySelector('h1').innerHTML = "<a href='/yaddaNEW'>NEW LINK!!!!</a>";
            });
            this.get('/yaddaNEW', function () {
                document.querySelector('h1').innerHTML = "OMG!!";
            });
            this.get('/blog/##/##/##', function (year, month, day) {
                document.querySelector('#content').innerHTML = "blog entry from " + year + "-" + month + "-" + day;
            });
            this.get('/blog/##', function (year, month, day) {
                document.querySelector('#content').innerHTML = "blog entry from " + year + "-" + month + "-" + day;
            });
            this.get('/', function () {
            });
            this.all(function () {
                document.querySelector('p').innerHTML = this.path;
                console.log(this.path);
            });
        }));

Path.js

var Path = function () {
    var refreshLinks = function () {
        [].forEach.call(document.querySelectorAll('a[href^="/"]'), function (link) {
            if (link.getAttribute('data-routed') !== '') {
                link.setAttribute('data-routed', '');
                link.addEventListener('click', function (event) {
                    Path.go(link.getAttribute('href'));
                    event.preventDefault();
                });
            }
        });
    };
    var handler = undefined;
    var callHandler = function (path) {
        handler(path);
        refreshLinks();
    };
    return {
        go: function (path) {
            if (history.pushState !== undefined) {
                history.isActive = true;
                history.pushState(null, null, path);
                callHandler(path);
            } else {
                location.pathname = path;
            }
        },
        setup: function (routeHandler) {
            handler = routeHandler;
            window.addEventListener('load', function () { callHandler(location.pathname); });
            if (history.pushState !== undefined) {
                window.addEventListener('popstate', function () { history.isActive && callHandler(location.pathname); });
                refreshLinks();
            }
        }
    };
}();

Route.js

var Route = function (routeHandler) {
    return function (path) {
        routeHandler.call({
            get: function (route, handler) {
                if (route.exec !== undefined) {
                    // regex way
                    var params = route.exec(path);
                    if (params !== null) {
                        handler.apply({ path: path }, params.slice(1));
                    }
                } else if (route.indexOf('##') >= 0) {
                    // doublehash (replaces doubledash with finding tokens till the ending '/'s, and make sure it's the full path)
                    var params = new RegExp('^' + route.replace(/##/g, '([^/]+)') + '$').exec(path);
                    if (params !== null) {
                        handler.apply({ path: path }, params.slice(1));
                    }
                } else if (route === path || (route === '/' && path === '')) {
                    // static route
                    handler.call({ path: path });
                }
            },
            all: function (handler) {
                handler.call({ path: path });
            }
        });
    };
};