Models are the heart of any JavaScript application, containing the interactive data as well as a large part of the logic surrounding it: conversions, validations, computed properties, and access control. You extend Backbone.Model with your domain-specific methods, and Model provides a basic set of functionality for managing changes.

var Sidebar = Backbone.Model.extend({
    promptColor: function() {
        var cssColor = prompt("Please enter a CSS color:");
        this.set({color: cssColor});
    }
});

window.sidebar = new Sidebar;

sidebar.on('change:color', function(model, color) {
    console.log('修改颜色',color)
});

sidebar.set({color: 'white'});

sidebar.promptColor();

Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;

if (protoProps && _.has(protoProps, 'constructor')) {
    child = protoProps.constructor;
} else {
    child = function () {
        return parent.apply(this, arguments);
    };
}

var Model = Backbone.Model = function (attributes, options) {
    var attrs = attributes || {};
    options || (options = {});
    this.cid = _.uniqueId('c');
    

 = {};
    if (options.collection) this.collection = options.collection;
    if (options.parse) attrs = this.parse(attrs, options) || {};
    attrs = _.defaults({}, attrs, _.result(this, 'defaults'));
    this.set(attrs, options);
    this.changed = {};
    this.initialize.apply(this, arguments);
};

sidebar.on('change:color', function(model, color) {
    console.log('修改颜色',color)
});

sidebar.set({color: 'white'});

_.extend(Model.prototype, Events, {});

var Sidebar = Backbone.Model.extend

if (!silent) {
    if (changes.length) this._pending = options;
    for (var i = 0, l = changes.length; i < l; i++) {
        this.trigger('change:' + changes[i], this, current[changes[i]], options);
    }
}

实例.attributes.name = "属性名";

var Chapter = Backbone.Model.extend({
  validate: function(attrs, options) {
    if (attrs.end < attrs.start) {
      return "can't end before it starts";
    }
  }
});

_validate: function (attrs, options) {
            if (!options.validate || !this.validate) return true;
            attrs = _.extend({}, this.attributes, attrs);
            var error = this.validationError = this.validate(attrs, options) || null;
            if (!error) return true;
            this.trigger('invalid', this, error, _.extend(options, {validationError: error}));
            return false;
        }