jQuery data() vs Objects (Performance)

I am wondering which way is more efficient using jQuery data to bind data for object or using this kind of object. I am trying to create some kind of model for my app. Here i开发者_开发知识库s the object code

var PersonData = function () {
    var that = {},
        _name = 0,
        _age = 0.0,
        _domId = false;

    that.data = initData();

    //This is for initing data from options
    function initOptions () {
        return {
            name: _name,
            age: _age,
            domId: _domId
        }
    }

    that.setName = function (name) {
        that.data.name = name;
    }

    that.getName = function () {
        that.data.name;
    }

    // I forgot to add dom id, now there is id for binding
    that.setDomElementId = function (id) {
        that.data.domId = id;
    }

    //Add getters and setter

    return that;
}

Thanks for your opinions

By the way is there good plugin for generating getters and setters in textmate for javascript

jQuery's .data() is for attaching data to DOM elements. If you're not touching the DOM, then don't touch .data().

Also, I don't think the kind of encapsulation you're going for is worthwhile in JavaScript (unless you require it to detect data read/writes). Especially if you're concerned about performance, directly accessing objects' properties is a much better option. JavaScript is a dynamic language, embrace it :)