Usage

// create a router
var router = new Router();

// define routes
router.define('/hello/world', function(){
  // `this` refers to the request inside of the handler
  if(this.method == 'GET'){ alert('hello, world'); }
  else                    { alert('hello, world via ' + this.method); }
}).resources('users', {
  show    : function(){
    $.get(this.path, this.queryParams, function(data) {
      $('#wrapper').html(data);
    });
  },
  index   : function(){
    // load users...
  },
  edit    : function(){
    // load the edit user form
  }
}).catchAll(function(){
  // all requests that do not match route will be passed to this handler
}).default(function(){
  // the default route to push on initial page load
});

Requirements

Currently requires jQuery, jquery.url.js, and jquery.ba-bbq.js, although I'll soon be working to eliminate those dependencies