菜鸟一枚，自写自用的前端路由器，支持pushstate 和 hashchange ，为写 riot or react 同构程序而写。 请大家多多提点意见，贴上代码库地址 minrouer 代码如下：

;(function() {
if(!window) return;
var win = window, evt = 'pushState' in history ? 'popstate' : 'hashchange', self = {};

var regexps = [
	/[\-{}\[\]+?.,\\\^$|#\s]/g,
	/\((.*?)\)/g,
	/(\(\?)?:\w+/g,
	/\*\w+/g,
],
getRegExp = function(route) {
	route = route.replace(regexps[0], '\\$&')
		.replace(regexps[1], '(?:$1)?')
		.replace(regexps[2], function(match, optional) {
			return optional ? match : '([^/?]+)'
		}).replace(regexps[3], '([^?]*?)');
	return new RegExp('^' + route + '(?:\\?([\\s\\S]*))?$');
},
extractParams = function(route, fragment) {
	var params = route.exec(fragment).slice(1);
	var results = [], i;
	for(i = 0; i < params.length; i++) {
		results.push(decodeURIComponent(params[i]) || null);
	}
	return results;
};

function Router(opts, sep) {
	this.routes = opts.routes;
	this.opts = opts;
	this.sep = sep || '';
	this.exec(location.pathname);
	self = this;
}
Router.prototype.exec = function(path) {
	for(var r in this.routes) {
	    var route = getRegExp(r);
	    if (!route.test(path)) {
	    	continue;
	    }
	    if (typeof this.routes[r] === 'function') {
	    	this.routes[r].apply(this, extractParams(route, path));
	    } else {
	    	var fn = this.opts[this.routes[r]];
	      	fn ? fn.apply(this, extractParams(route, path)) : void 0;
	    }
	}
};
Router.prototype.emmit = function(path) {
	if('pushState' in history) {
		path = path.state.path;
	}else {
		path = location.href.split('#')[1] || '';
	}
	self.exec(path);
}
Router.prototype.start = function() {
	win.addEventListener ? win.addEventListener(evt, this.emmit, false) : win.attachEvent('on' + evt, this.emmit)
};
Router.prototype.stop = function() {
	win.removeEventListener ? win.removeEventListener(evt, this.emmit, false) : win.detachEvent('on' + evt, this.emmit);
};
Router.prototype.go = function(path) {
	if('pushState' in history) {
		history.pushState({path: path}, document.title, path);
	}else {
		if(this.sep !== '/') {
			location.hash = this.sep + path;
		}
	}
	this.exec(path);
};
Router.prototype.hold = function(e) {
	if(!e) return;
	var path = e.srcElement.pathname;
	if(!('pushState' in history)) {
		path = '/' + path;
	}
	this.go(path);
	if(e && e.preventDefault) {
		e.preventDefault();      
	}else {
		if(this.sep !== '/') {
			e.returnValue = false;              
	 		return false; 
		}
	}
};
Router.prototype.back = function() {
	history.back();
};

if(typeof exports === 'object') {
	module.exports = Router;
}else if(typeof define === 'function' && define.amd) {
	define(function() { return window.MinRouter = Router; })
}else {
	window.MinRouter = Router;
}
})(typeof window != 'undefined' ? window : undefined);