alpha rule (v2)

Validate only alphabetic characters - a-z, A-Z.

Since

1.1.0

Signature

alpha(input)

Options

0

Usage

alpha usage

bootstrapValidate('#input', 'alpha:You can only input alphabetic characters')

Options

This rule only needs an error message after the rule name, for example alpha:You can only input alphabetic characters.

Live Example

Value

Checking...

Source

alpha source

/**
 * @since 1.1.0
 * @error You can only input alphabetic characters
 * @description Validate only alphabetic characters - a-z, A-Z.
 */
export default function alpha(input: RuleInput) {
  return isString(input.value) && /^[a-z]+$/i.test(input.value);
}