Dynamic Billing Form

A cascading conditional form where the combination of account type, subscription plan, and payment method determines which fields are required. This demonstrates 3-level if/then/else logic.

Key Features

• 3-field cascading conditions (accountType × subscriptionPlan × paymentMethod)
• Business + invoice → all accounting fields required
• Business + card → basic company info required
• Personal + premium → billing address required
• Personal + free → only email required