hash router

HashRouter.js

/**

 @HashRouter: Singleton hash router object.

 // define onroute function
 HashRouter.onroute = function(hash){}

 // start the router
 HashRouter.start();

 // prefixes all hash routes. / is default
 HashRouter.hashPrefix = "/";

 // manually trigger a route
 HashRouter.go("hello");

 // get the current route
 HashRouter.getRoute(); // 'hello'
 window.location.hash; // '#/hello'

 */
HashRouter = new (function () {
	var prevLocation, history = [];

	var _this = this;
	this.hashPrefix = "/";

	// @return the hash without the prefix
	this.getRoute = function(){
		return window.location.hash.slice(1 + _this.hashPrefix.length);
	};

	this.getHistory = function(){
		return history.concat();
	};


	this.start = function () {
		prevLocation = _this.getRoute();

		// manually call this the first time around
		this.onroute(prevLocation, []);

		setInterval(function () {
			var newLocation = _this.getRoute();
			if (newLocation != prevLocation) {
				history.unshift(prevLocation);
				_this.onroute(newLocation, history);
				prevLocation = newLocation;
			}
		}, 100);

	};

	this.onroute = function (hash) {
	};

	this.go = function (hash) {
		window.location.hash = "#" + this.hashPrefix + hash;
	}

})();