Introduction to JSON

JSON is a format for exchanging information between different programs. It’s like a list of things, where each thing has a name and a value.

Object

Imagine you have an object. An object consists of curly braces {} and inside it, there are names and values separated by commas. For example, you can have an object that contains a person’s name and age:

{
  "name": "Jeffey",
  "age": 34
}

Array

An array is like a list. It is written inside square brackets [] and contains values that are also separated by commas. Here is an example of an array of fruit:

["black", "red", "yellow"]

The values in JSON can be strings (text), numbers, boolean values (like “true” or “false”), other objects, arrays, or even nothing (null).

Strings are enclosed in double quotes ". For example, "Hello" is a string.

Numbers, boolean values, and null are written without quotes. For example, 42 is a number, and true is the boolean value “true”.

Why JSON?

JSON is easy to read and supported by many programming languages. It is used for exchanging information between programs and is a popular choice for data communication.