tvdstaaij / input-field-validator

Javascript library for input validation

Input Field Validator

A Javascript input validation library heavily inspired by Laravel's input validation.

Example

let Validator = require ('input-field-validator');

let validation = new Validator
(
	req.body,
	{
		first_name: ['required', 'minlength:3'],
		last_name: ['required', 'minlength:3'],
		username: ['required', 'minlength:3', 'lowercase'],
		email: ['required', 'email', 'lowercase'],
		password: ['required', 'minlength:8'],
		password_confirm: ['required', 'same:password'],
		dob: ['required', 'date:before:2010-01-01'],
		gender: ['required', 'in:male,female,unspecified'],
		tags: ['optional', 'array', 'minlength:3', 'maxlength:32']
	}
);

if (! validation.validate ())
	throw new Error (validation.errors.join (', '));

Available validators

• array
• required
• optional
• integer
• number
• email
• url
• length (length:3 checks if the input string is exactly 3 characters long)
• maxlength (minlength:3 checks if the input string is at least 3 characters long)
• minlength (maxlength:8 checks if the input string is at most 8 characters long)
• in (in:joske,maria,piet checks if the input string is equal to either joske, maria or piet)
• same (same:password_confirmation checks if the value is equal to the value of the password_confirmation field)
• different (different:old_password checks if the value is different from the value of the old_password field)
• required_with (required_with:old_password makes the field required if the old_password field is present in the input)
• required_if (required_if:gender,unspecified makes the field required if the gender field is is equal to unspecified)
• lowercase (checks if the input string consists entirely of lower case characters)
• uppercase (checks if the input string consists entirely of upper case characters)
• alpha (alphabetic characters)
• alpha_num (alphanumeric characters)
• alpha_dash (alphanumeric characters, dashes and underscores)
• date (checks if the input is a valid date)
• date:before (date:before:now checks if the input date is in the past, date:before:1995-02-03 checks if the input date is before the 3rd of February 1995)
• date:after (date:before:now checks if the input date is in the past, date:after:1995-02-03 checks if the input date is after the 3rd of February 1995)
• date:equal (date:before:now checks if the input date is today's date, date:equal:1995-02-03 checks if the input date is the 3rd of February 1995)
• boolean (checks if the input is a boolean value; accepted values are true, false, 0, 1, "true", "false", "0" and "1")
• object (checks if the input is an object)
• distinct (checks that the field's value is not present anywhere else in the input)
• ip
• ipv4
• ipv6
• json
• regex (tests the input value against the given regular expression)