Dart Requires Chilkat v11.1.0+

Create more Complex JSON Document

See more JSON Examples

Sample code to create the following JSON document:

    {  
        "Title": "The Cuckoo's Calling",  
        "Author": "Robert Galbraith",  
        "Genre": "classic crime novel",  
        "Detail": {  
            "Publisher": "Little Brown",  
            "Publication_Year": 2013,  
            "ISBN-13": 9781408704004,  
            "Language": "English",  
            "Pages": 494  
        },  
        "Price": [  
            {  
                "type": "Hardcover",  
                "price": 16.65  
            },  
            {  
                "type": "Kindle Edition",  
                "price": 7.00  
            }  
        ]  
    }  

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final json = CkJsonObject();

  // The only reason for failure in the following lines of code would be an out-of-memory condition..

  // An index value of -1 is used to append at the end.
  final index = -1;

  json.addStringAt(-1, 'Title', 'The Cuckoo\'s Calling');
  json.addStringAt(-1, 'Author', 'Robert Galbraith');
  json.addStringAt(-1, 'Genre', 'classic crime novel');

  // Let's create the Detail JSON object:
  final detail = CkJsonObject();
  json.appendObject2('Detail', detail);

  detail.addStringAt(-1, 'Publisher', 'Little Brown');
  detail.addIntAt(-1, 'Publication_Year', 2013);
  detail.addNumberAt(-1, 'ISBN-13', '9781408704004');
  detail.addStringAt(-1, 'Language', 'English');
  detail.addIntAt(-1, 'Pages', 494);

  // Add the array for Price
  final aPrice = CkJsonArray();
  json.appendArray2('Price', aPrice);

  // Entry in aPrice will be a JSON object.

  // Append a new/empty ojbect to the end of the aPrice array.
  final priceObj = CkJsonObject();

  aPrice.addObjectAt2(-1, priceObj);
  priceObj.addStringAt(-1, 'type', 'Hardcover');
  priceObj.addNumberAt(-1, 'price', '16.65');

  aPrice.addObjectAt2(-1, priceObj);
  priceObj.addStringAt(-1, 'type', 'Kindle Edition');
  priceObj.addNumberAt(-1, 'price', '7.00');

  json.emitCompact = false;
  print(json.emit());
}