Field Masking

Automatically format user input to match expected patterns (e.g., phone numbers)

Field Masking allows you to define an input format that automatically structures user input as they type, ensuring clean, consistent data every time.

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🧠 What it does

Masking improves the user experience and enforces correct formatting without requiring the user to think about it.

When applied, the form guides the user visually by formatting the input according to a defined mask pattern.

Use Cases

• Phone numbers with international formatting

• Postal codes (e.g., Dutch format 1234 AB)

• Social security numbers or tax IDs

• IBAN or credit card numbers (auto-grouped by 4 digits)

• Dates (e.g., DD/MM/YYYY)

Here’s how Field Masking looks in action:

• Phone number field: Automatically formats input as [phone] This prevents inconsistent number formatting and simplifies international phone number entry.

• Postal Code field: Enforces a structure like 1234 DD Ensuring that postal codes are correctly entered with both numbers and letters in the required layout.

Why it matters:

• Consistent input formatting

• Fewer user errors

• No need for manual data cleanup

• Better alignment with back-end validation

🔄 Combine this with Field Validation (Regex) for even stronger input control and custom error messages.