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Form Validation

Real-time validation with error messages and visual feedback.

9 valid

Registration Form

All fields are validated in real-time as you type.

Validation Rules

This form enforces the following validation rules.

Username

Min 3 characters
Letters, numbers, underscores only

Email

Must be a valid email format

Age

Must be between 18 and 120

Password

Min 8 characters
Must contain uppercase, lowercase, and a number

Confirm Password

Must match password

Country

Required selection

Bio

Min 10 characters

Website

Must start with http:// or https:// (optional)

Agree

Must be checked