Form Submission: When you click “submit,” React checks for errors using the validateForm() function. If there are no errors, it logs the submitted data; if there are errors, it shows error messages.

Joi (20.1k ⭐) — The most powerful schema description language and data validator for JavaScript. Joi lets you describe your data using a simple, intuitive, and readable language. With Joi, you can easily validate and sanitize input data, ensuring that it meets the desired criteria and constraints.

Form validation is useful when you need a user to input information that is expected to meet certain requirements. There are two validation standards: server side validation and client side validation. There are several ways to achieve accurate form validation for each of these standards.