Backbone.js history 'on route change' event?

Question

Is there a general event that fires every time we navigate to a different URL?

window.App =
  Models: {}
  Collections: {}
  Views: {}
  Routers: {}

  init:         


        

Answer 1

From the Backbone docs

This method is called internally within the router, whenever a route matches and its corresponding callback is about to be executed. Override it to perform custom parsing or wrapping of your routes, for example, to parse query strings before handing them to your route callback, like so:

var Router = Backbone.Router.extend({
  execute: function(callback, args) {
    args.push(parseQueryString(args.pop()));
    if (callback) callback.apply(this, args);
  }
});

This site has some useful code for redefining the Router to support 'before' and 'after' hooks, though it would require updating with each version-change of Backbone.