JSON (JavaScript Object Notation) is a lightweight format used for storing and exchanging data between servers and web applications. As developers, we often work with JSON data, making it crucial to validate this information before using it in our applications. This guide will walk you through validating JSON data in JavaScript, providing practical examples along the way.
Why Validate JSON Data?
Validating JSON data ensures that your application receives well-structured data, reducing potential errors and increasing overall stability. It also allows you to catch malformed requests early on, preventing possible security vulnerabilities such as injection attacks.
Three Common Approaches to JSON Data Validation
There are three primary approaches when validating JSON data in JavaScript: manual validation, schema-based validation via libraries like Ajv, and built-in browser features like JSON.parse(). We'll cover each method below.
Method 1: Manual Validation
Manually checking if an object conforms to a specific structure can be done by…
