Javascript prototype to manage history via hash.

HistoryHandler.js

function HistoryHandler(pathname) {
	this.hashes = [];
	this.active = false;
	var self = this;
	this.pageregex = new RegExp(pathname.replace(/\//g, '\\/') + '$');
	if (window.location.pathname.match(this.pageregex)) {
		this.active = true;
		$(window).on('hashchange', function (event) {
			for (var i in self.hashes) {
				var h = self.hashes[i];
				if (typeof h.hash == 'string' && h.hash == window.location.hash) {
					h.action();
					break;
				} else if (h.hash instanceof RegExp) {
					var params = window.location.hash.match(h.hash);
					if (!params) {
						continue;
					}
					params.shift();
					if (window.location.hash.match(h.hash)) {
						h.action.apply(this, params);
						break;
					}
				}
			}
		});
	}
};

HistoryHandler.prototype.on = function (hash, cb) {
	if (!this.active) {
		return this;
	}
	if (typeof hash == 'string') {
		this.hashes.push({
			hash: hash === '' ? '' : '#' + hash,
			action: cb
		});
	} else {
		this.hashes.push({
			hash: new RegExp('^#' + hash.source + '$'),
			action: cb
		});
	}
	return this;
};