Step 12 -> 13

12.diff

 var events = _.clone(Backbone.Events);

 var Statuses = function() {
 };
 Statuses.prototype.add = function(text) {
     $.ajax({
         url: '/status',
         type: 'POST',
         dataType: 'json',
         data: { text: text },
         success: function(data) {
             events.trigger('status:add', data.text);
         }
     });
 };

 var NewStatusView = function(options) {
     this.statuses = options.statuses;
-    this.el = $('#new-status');
+    this.el = options.el;

     events.on('status:add', this.clearInput, this);

     var add = $.proxy(this.addStatus, this);
     this.el.find('form').submit(add);
 };
 NewStatusView.prototype.addStatus = function(e) {
     e.preventDefault();

     this.statuses.add(this.el.find('textarea').val());
 };
 NewStatusView.prototype.clearInput = function() {
     this.el.find('textarea').val('');
 };

-var StatusesView = function() {
-    this.el = $('#statuses');
+var StatusesView = function(options) {
+    this.el = options.el;

     events.on('status:add', this.appendStatus, this);
 };
 StatusesView.prototype.appendStatus = function(text) {
     this.el.find('ul').append('<li>' + text + '</li>');
 };

 $(document).ready(function() {
     var statuses = new Statuses();
-    new NewStatusView({ statuses: statuses });
-    new StatusesView();
+    new NewStatusView({ el: $('#new-status'), statuses: statuses });
+    new StatusesView({ el: $('#statuses') });
 });