BackboneのModelに付け足す

backbone.model.ext.js

(function(root, factory) {
    if (typeof define === 'function' && define.amd) {
        define([
            'underscore',
            'backbone'
        ], function(_, Backbone) {
            factory(root, _, Backbone);
        });
    } else if (typeof exports !== 'undefined') {
        var _ = require('underscore'),
        Backbone = require('backbone');
        factory(root, _, Backbone);
    } else {
        factory(root, root._, root.Backbone);
    }
}(this, function(root, _, Backbone) {
    'use strict';

    Backbone.Model.prototype.with = function(fn, context) {
        var attrs = _.clone(this.attributes);
        fn.apply(context, [attrs]);
        this.set(attrs);
        return this;
    };
    /**
     * Usage:
     */
//    var User = Backbone.Model.extend({}),
//    user = new User({
//        name : 'juck',
//        age : 30
//    });
//    user.on('change', function() { console.log(arguments); });
//    user.with(function(a) {
//        console.log(a);
//        a.name = 'juck2';
//        a.age = 300;
//    });

    return Backbone;
}));