Input Validation Techniques

When users enter data into your app, you need to make sure it's correct and safe. This process is called input validation.

It's crucial for maintaining data quality and preventing errors or security issues, ensuring your application works as expected.

Validation helps in many ways to create robust and user-friendly applications:

• Data Integrity: Ensures data fits expected formats (e.g., email looks like an email).
• User Experience: Guides users to enter correct information, reducing frustration.
• Security: Prevents malicious input that could exploit your app (e.g., SQL injection).
• Business Logic: Ensures data meets specific business rules (e.g., age requirements, unique usernames).