javascript - Backbone model attribute -


i have backbone model looks this:

 var user = backbone.model.extend({               idattribute: "_id",              givenname: 'usermodel',              urlroot: '/users',              defaults: {                 firstname: null,                 lastname: null,                 username: null,                 password: null,                 email: null             },              initialize: function (options) {                  this.options = options || {};                  _.bindall(this, 'deletemodel', 'persist', 'validate');               },              constructor: function (attributes, options) {                 backbone.model.apply(this, arguments);             },              validate: function (attr) {                  return undefined;             },               persist: function (adds, callback) {              },             deletemodel: function (callback) {               }          });

but why doesn't givenname show in debugger? assume it's nature of backbone , nothing that's wrong code or debugger.

enter image description here

here console.logged "model.givenname" , indeed defined. don't understand how backbone working:

https://www.dropbox.com/s/h61xpl8st98wcqi/screenshot%202015-07-07%2020.57.49.png?dl=0

enter image description here


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