In the realm of web development, ensuring data integrity is paramount. Whether you’re receiving input from users, consuming APIs, or handling data within your application, validating the structure and content of the data is essential for maintaining consistency and preventing errors. JSON Schema provides a powerful solution for data validation in JavaScript applications.
In this article, we’ll explore the fundamentals of JSON Schema and demonstrate how to use it effectively for data validation, with practical code examples.
Understanding JSON Schema
JSON Schema is a vocabulary that allows you to annotate and validate JSON documents. It provides a way to describe the structure of JSON data, including specifying required fields, data types, formats, and constraints. JSON Schema is expressed in JSON format itself, making it easy to understand and work with.
Defining a Simple JSON Schema
Let’s start by defining a simple JSON Schema for validating user data. Suppose we want to ensure that a user object contains a name, email, and age, where the name is a string…
