Deserializing JSON to JavaScript objects

The simplest of all cases is reading JSON data into JavaScript objects. Data formatted in this way is of lightweight and additionally it is a subset of JavaScript. There are several ways to read this data and we will take a look at how this can be done by creating a simple JSON snippet and then converting it to JavaScript objects.

How to do it...

This example will be simple enough to be a script in an HTML file or even executed on a firebug or developer tools console:

1. We first need the following serialized JSON string:

   var someJSONString = '{"comment":"JSON data usually is retrieved from server","who":"you"}';

2. There are few different ways to do this without adding external JavaScript dependency, one is through the use of eval, the other is through the use of json:

        var evalData =  eval('(' + someJSONString + ')');
        var jsonData =  JSON.parse(someJSONString);

3. After this we will try to access some of the attributes form the deserialized object:

      ...