(JavaScript) JSON: Nested Objects

Here we have a JSON object that contains nested JSON objects. This example demonstrates how to access the contents of the nested objects.

{
  "name": "donut",
  "image":
    {
    "fname": "donut.jpg",
    "w": 200,
    "h": 200
    },
  "thumbnail":
    {
    "fname": "donutThumb.jpg",
    "w": 32,
    "h": 32
    }
}

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

var json = new CkJsonObject();

// This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
// The presence of whitespace chars for pretty-printing makes no difference to the Load
// method. 
var jsonStr = "{\"name\": \"donut\",\"image\":{\"fname\": \"donut.jpg\",\"w\": 200,\"h\": 200},\"thumbnail\":{\"fname\": \"donutThumb.jpg\",\"w\": 32,\"h\": 32}}";

success = json.Load(jsonStr);
if (success == false) {
    console.log(json.LastErrorText);
    return;
}

// Get the "image" object.
var imageObj = new CkJsonObject();
json.ObjectOf2("image",imageObj);

console.log("image: fname=" + imageObj.StringOf("fname") + ", width=" + imageObj.IntOf("w") + ", height=" + imageObj.IntOf("h"));

// Get the "thumbnail" object.
var thumbObj = new CkJsonObject();
json.ObjectOf2("thumbnail",thumbObj);

console.log("thumbnail: fname=" + thumbObj.StringOf("fname") + ", width=" + thumbObj.IntOf("w") + ", height=" + thumbObj.IntOf("h"));