Deserializing JavaScript object instance

Question

I am working on an app that heavily uses JavaScript. I am attempting to include some object-oriented practices. In this attempt, I have created a basic class like such:

Answer 1

Disclaimer

Not a full time time J.S. Developer, answer may have some minor bugs:

Long Boring Explanation

As mentioned by @JAAulde, your object cannot be serialized into JSON, because has functions, the technique that you are using doesn't allow it.

Many people forget or ignore that the objects that are used in an application, may not be exactly the same as saved / restored from storage.

Short & quick Answer

Since you already encapsulate the data members of your object into a single field, you may want to try something like this:

// create J.S. object from prototype
Item item = new Item();

// assign values as you app. logic requires
item.data.name = "John Doe";
item.data.description = "Cool developer, office ladies, love him";

// encoded item into a JSON style string, not stored yet
var encodedItem = JSON.stringify(item.data)

// store string as a JSON string
window.localStorage.setItem("itemKey", encodedItem);

// do several stuff

// recover item from storage as JSON encoded string
var encodedItem = window.localStorage.getItem("itemKey");

// transform into J.S. object
item.data = JSON.parse(encodedItem);

// do other stuff

Cheers.