JSON => JavaScript Object Notation
JSON is a language independent, object interchange format. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.
JSON Consists of 2-structures
- collection of Name / Value pairs which is implemented in languages as Dictionary or HashTable
- ordered list of Values, which is implemented in languages as Arrays or Collections
Object: It is collection of unordered list of Name:Value pairs. In the notation it starts with '{' and ends with '}'. In the braces it contains collection of name-value pairs. Name value pairs are notated as Name:Value. Each Name:Value pairs are separated by ,.
 Array: It is collection of ordered list of Values. In notation it starts with '[' and ends with ']'. In between the brackets there are Values. Each Value in Array are separated by ",".  Value: It can be Array,object,string,boolean value, number or null value.  String: It is set of valid unicode-charecters and special characters (Except '\')  Number: It is similar to the numbers in languages like c,java,C# etc. |
Notations
Object: {} {Members} Member: Pair Pair,Members Pair: String : Value Array: [] [Elements] Elements: Value Value, Elements Value: String, Number, Object, Array, True, False, Null String: Chars Chars: Char, Chars Char: Valid Unicode-Chars \" (Double Quote) \\ (Back Slash) \b (backspace) \f(formfeed) \n(new line) \r(carriage return) \t(tab) \u[xxxx] Hex values Number: Int Int Fractional Exp Fractional Exp Int Fractional Exp Int: Digits (0 to 9) -Digits Fractional: .Digits Exp: e Digits Digits: Digit Digits |
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