Introduction to JSON
Learn about JSON, a lightweight data format widely used for data exchange between a server and a client.
We'll cover the following...
JSON (JavaScript Object Notation) is a text-based data format used to represent structured data. It is commonly employed to transmit data in web applications. JSON is easy to read and write, making it ideal for both humans and machines.
JSON data consists of key-value pairs and supports structures like objects and arrays. While it resembles JavaScript object syntax, JSON is a standalone format used in many programming environments.
JSON syntax
JSON syntax is simple and restricted to these data types:
Strings: Enclosed in double quotes (e.g.,
"Hello").Numbers: Whole numbers, decimals, or scientific notation (e.g.,
42,3.14).Booleans:
trueorfalse.Null: Represents a null value.
Arrays: Ordered lists of values (e.g.,
[1, "apple", false]).Objects: Collections of key-value pairs enclosed in curly braces (e.g.,
{"key": "value"}).
Here is an example of a JSON object: