Unity3D: Example of using MiniJSON in UnityScript (JavaScript).

minijsonjsdemo.js

#pragma strict
import MiniJSON;
import System.Collections.Generic;

function Start () {
    var jsonString = "{ \"array\": [1.44,2,3], " +
                        "\"object\": {\"key1\":\"value1\", \"key2\":256}, " +
                        "\"string\": \"The quick brown fox \\\"jumps\\\" over the lazy dog \", " +
                        "\"unicode\": \"\\u3041 Men\\u00fa sesi\\u00f3n\", " +
                        "\"int\": 65536, " +
                        "\"float\": 3.1415926, " +
                        "\"bool\": true, " +
                        "\"null\": null }";

    var dict = Json.Deserialize(jsonString) as Dictionary.<String,System.Object>;

    Debug.Log("deserialized: " + dict.GetType());
    Debug.Log("dict['array'][0]: " + ((dict["array"]) as List.<System.Object>)[0]);
    Debug.Log("dict['string']: " + dict["string"] as String);
    Debug.Log("dict['float']: " + dict["float"]); // floats come out as doubles
    Debug.Log("dict['int']: " + dict["int"]); // ints come out as longs
    Debug.Log("dict['unicode']: " + dict["unicode"] as String);

    var str = Json.Serialize(dict);

    Debug.Log("serialized: " + str);
}

Thanks! I've made another example, but using classes. This way you can use your variable just like in Javascript.
https://gist.github.com/Edudjr/cb407c67e76ac36bcfac#file-classminijson-js