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Validators
Single Line Text → Settings → Advanced
Validators prevent the form being submitted if the submitted data does not match the validator rules. See below for an explanation of what each validator does and its options.
Adding a validator
To add a validator, click the button of the validator you want to add, for example, to add the Digits validator, click the Digits button.
Removing a validator
To remove a validator, click the remove icon on the validator.
Validators
Alpha Numeric
The alpha numeric validator checks that the value contains only alphabet or digit characters.
Options
| Option | Default | Description |
|---|---|---|
| Allow whitespace | unchecked | Whether to allow whitespace such as spaces and tabs |
Alpha
The alpha validator checks that the value contains only alphabet characters.
Options
| Option | Default | Description |
|---|---|---|
| Allow whitespace | unchecked | Whether to allow whitespace such as spaces and tabs |
Digits
The digits validator checks that the value contains only digits.
Options
| Option | Default | Description |
|---|---|---|
| Allow whitespace | unchecked | Whether to allow whitespace such as spaces and tabs |
The email validator checks that the value is a valid email address.
Greater Than
The greater than validator checks that the value is numerically greater than the given minimum.
Options
| Option | Default | Description |
|---|---|---|
| Minimum | 0 | Minimum allowed value |
Identical
The identical validator checks that the value is identical to the given token.
Options
| Option | Default | Description |
|---|---|---|
| Token | Token to match against the value |
Less Than
The less than validator checks that the value is numerically less than the given maximum.
Options
| Option | Default | Description |
|---|---|---|
| Maximum | 10 | Maximum allowed value |
Length
The length validator checks that the length of the value is between the given maximum and minimum.
Options
| Option | Default | Description |
|---|---|---|
| Minimum length | 0 | Minimum allowed length |
| Maximum length | Maximum allowed length |
Regex
The regex validator checks that the value matches the given regular expression.
Options
| Option | Default | Description |
|---|---|---|
| Pattern | The regular expression pattern to match |