What Is JSON? ... In web and mobile application development, one versatile data format reigns supreme: JavaScript Object Notation,
: Enclosed in curly braces {} . Data is written as "key": "value" pairs, separated by commas. Keys must always be double-quoted strings.
is a lightweight, text-based data interchange format used to store and transmit structured data. While its roots are in JavaScript, JSON is language-independent and has become the universal standard for web APIs, mobile applications, and cloud services. 1. Core Syntax and Data Types