Form validation ensures that users enter correct and complete data before submitting a form.
Validation helps prevent empty fields and incorrect input.
Client-side validation improves user experience by showing instant feedback.
Before submitting the form, input values should be checked.
This checks whether the field is empty.
Length validation is commonly used for usernames.
Validation Basics:
- Check empty fields
- Validate input length
- Improve data quality
- Prevent invalid submission