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How to validate data?

How to validate data?​

Data validation is a crucial part of building a web application, and Express.js provides several ways to perform it. In this documentation, we will discuss the popular methods of data validation in Express.js with examples.

  1. Custom validation logic
  2. joi
  3. mongoose

All these methods are explained in detail in the following sections. All these have their pros and cons. So, you can choose the one that suits your needs.

tip

Read all the sections to understand the concept of data validation in Express.js, but don't skip the joi and mongoose sections as they are the most popular and widely used libraries for data validation in Express.js.