获取当前所有的属性

Person = Backbone.Model.extend({
    defaults: {
        name: 'Fetus',
        age: 0,
        children: []
    },
    initialize: function() {
        console.log('欢迎来到这个无蛋的世界！');
    }
});

var person = new Person({
    name: 'Thomas',
    age: 67,
    children: ['Ryan']
});
var attributes = person.toJSON();
console.log(attributes);
console.log(JSON.stringify(attributes));