How do I implement data validation in my application?

How do I implement data validation in my application?

To implement data validation, you can use techniques like input validation, type checking, and regex patterns.

What are some common validation techniques I should know?

Common techniques include required fields, format checks, range checks, and custom validation rules.

Can you give me an example of a regex pattern for email validation?

Sure! A common regex for email validation is: ^[\w-.]+@([\w-]+.)+[\w-]{2,4}$.

How can I handle validation errors in my application?

You can handle validation errors by displaying user-friendly messages and highlighting the fields that need correction.