Route.js

var Route = function(config) {
    this.path = config.path || ''
    var keys = [],
        raws = {},
        regexp = new RegExp(
            this.path.replace(
                /{([a-zA-Z0-9_-]+)}/g,
                function(full, name) {
                    raws[name] = full
                    keys.push(name)
                    return '([^/]+)'
                }
            )
        )
    this.keys       = keys
    this.raws       = raws
    this.pattern    = regexp
    this.controller = config.controller || function() { }
}

Route.prototype.match = function(string) {
    var matches = string.match(this.pattern)
    if(!matches) {
        return false
    }
    if(matches.length !== this.keys.length + 1) {
        return false
    }
    var params = {}
    for(var i=0;i<this.keys.length;i++) {
        params[this.keys[i]] = matches[i+1]
    }
    return params
}

Route.prototype.generate = function(options) {
    var str = this.path
    for(var key in this.raws) {
        str = str.replace(this.raws[key], options[key])
    }
    return str
}

Router.js

var Router = function(config) {
    this.routes = config.routes.map(this.createRoute)
}

Router.prototype.createRoute = function(config) {
    return new Route(config)
}

Router.prototype.update = function() {
    var hash = (window.location.hash || '').replace(/^#!/, '')
    for(var i in this.routes) {
        var route = this.routes[i]
        var match = route.match(hash)
        if(match) {
            route.controller(match)
        }
    }
}

Router.prototype.url = function(name, params) {
    for(var i=0;i<this.routes.length;i++) {
        if(this.routes[i].name && this.routes[i].name === name) {
            return this.routes[i].generate(params)
        }
    }
    return false
}

Router.prototype.navTo = function(name, params) {
    window.location.nav = '#!' + this.url(name, params)
}