Error messages guide users when something goes wrong in a form.
Clear and friendly messages reduce frustration and help users complete tasks successfully.
Why Error Messages Matter
Poor error messages confuse users and increase form abandonment.
Good messages improve user experience and trust.
Characteristics of Good Error Messages
Good error messages should be:
- Clear
- Polite
- Specific
- Easy to understand
Bad vs Good Error Messages
Bad message: “Invalid input”
Good message: “Please enter a valid email address.”
Using Built-in Validation Messages
Browsers display default error messages for required fields and format errors.
These messages are useful but limited in customization.
The browser automatically shows a helpful message when the field is empty or invalid.
Providing Custom Guidance with the title Attribute
The title attribute shows a custom hint when validation fails.
This message appears when the input does not match the required pattern.
Where to Place Error Messages
Error messages should appear:
- Near the input field
- After the user action
- In a noticeable but non-intrusive way
Accessibility Considerations
Error messages should be readable and easy to understand.
Clear language helps all users, including those using assistive technologies.
Why This Matters for Jobs
Good form design is not just technical, it is user-focused.
Employers value developers who care about user experience.
Practice Task
Create a form with:
- A required email field
- A name field using pattern and title
Test how your error messages guide users.
What You Will Learn Next
In the next lesson, you will learn professional best practices for form validation.