Validation ensures that only certain values are entered in a field. Validation functionality is available for text and numeric fields.
To enable validation,
Add a Text or Numeric field to a form in the Builder view.
Open the field’s Properties tab.
Turn on the Validation toggle to enable validation and open its configuration options.
Validation for text fields contains several options. You must first choose a list of available conditions to check:
- If Input Contains
- If Input Does Not Contain
- If Input Is not URL
- If Input Is not Email
- If Input Does not Match
If the condition isn’t met, an error message is displayed to the user. Where you go from there depends on which condition you used.
When you validate text data to check if it contains a certain value, there are two additional steps to take after selecting the condition:
Enter the text to check for.
Enter an error message so users understand why their submission failed.
Checking for properly formatted URLs and emails is easy. Just choose the condition from the If Input drop-down and enter the error message.
Valid URLs begin with
https://. Valid emails must contain
The Does Not Match condition is used for entering regular expressions to create custom validation criteria. For example, use this regular expression to ensure that ten consecutive numeric digits are entered in a phone number field:
If you use regular expression validation, provide some explanatory text (e.g., help text, placeholder text, and a clear error message) to guide form users in entering the proper data.
Numeric field validation is similar to text field validation, but the conditions compare the value of the number entered to some other value.
Available conditions to check include
- Is greater than or equal to
- Is greater than
- Is not equal to
- Is less than or equal to
- Is less than
For example, to make sure users don’t enter a number over 10, enable validation and use Is greater than with a value of 10. Use the message Please enter 10 or less.
Note that numeric fields are text fields validated to allow only numeric data entry. That’s why they’re in the Customized Elements section of the form fields list. In addition, the property My numeric type is (can be Integer or Decimal) on the Basic tab of a numeric form is another form of validation.