JSON Data Types At the granular level, JSON consists of 6 data types. The first four data types (string, number, boolean and null) can be referred to as simple data types. The other two data types (object and array) can be referred to as complex data types. Let’s learn about each … Valid Data Types In JSON, values must be one of the following data types: a string a number an object (JSON object) an array a boolean null Learn all six JSON data types with syntax, examples, real-world use cases, common mistakes, and best practices. Interactive tutorial with live code editor. This guide walks through all JSON Schema data types, explains how validation works in practice, and shows how to test schemas against real API responses in Postman. JSON has exactly 6 data types: string, number, boolean, null, array, and object. Learn syntax rules, IEEE 754 number precision, null vs undefined, type coercion, and TypeScript mapping for all JSON types. This is a quick reference cheat sheet for understanding and writing JSON format configuration files. JSON is a lightweight text-based, data-interchange format and it is completely language-independent. JSON supports mainly 6 data types: Note: string, number, boolean, null are simple data types or primitives data types whereas object and array are referred as complex data types. Learn about the different data types supported by JSON including strings, numbers, objects, arrays, booleans, and null. JSON supports exactly six data types. Learn strings, numbers, booleans, null, objects, and arrays with examples. The following table maps from the names of JSON types to their analogous types in Python.