Assertions

name	argument	default	description
$is	one of the Data type values		Checks whether validated entity is of type specified. Eg.: {username: {$is: String}}
$isAfter	Date / String		Check if a string is a date that's after the specified date (defaults to now). Eg.: {created_at: {$isAfter: "2011-08-04"}}
$isAlpha	one of the Locales	"en-US"	Checks if the string contains only letters (a-zA-Z). Eg.: {username: {$isAlpha: 'en-US'}}
$isAlphanumeric	one of the Locales	"en-US"	Checks if the string contains only letters and numbers.
$isAscii			Checks if the string contains ASCII chars only. Eg.: {username: {$isAscii: null}}
$isBase64			Checks if a string is base64 encoded. Eg.: {thumbnail-data: {$isBase64: null}}
$isBefore	Date / String		Checks if the string is a date that's before the specified date. Eg.: {created_at: {$isBefore: new Date}}
$isBoolean			Checks if a string is a boolean. Eg.: {banned: {$isBoolean: null}}
$hasByteLength	MinMaxBoundariesOptionsObject	{min:0}	Checks if the string's length (in bytes) falls in a range.
$isCreditCard			check if the string is a credit card
$isCurrency	CurrencyOptionsObject	see here	check if the string is a valid currency amount
$isDataURI			check if the string is a data uri format.
$isDate			check if the string is a date.
$isDecimal			check if the string represents a decimal number, such as 0.1, .3, 1.1, 1.00003, 4.0, etc.
$isDivisibleBy	Number		check if the string is a number that's divisible by another. Eg.: {amount: {$isDivisibleBy: 2}}
$isEmail	EmailOptionsObject	see here	check if the string is an email
$isFQDN	FQDNOptionsObject	see here	check if the string is a fully qualified domain name (e.g. domain.com)
$isFloat	MinMaxBoundariesOptionsObject		check if the string is a float.
$isFullWidth			check if the string contains any full-width chars.
$isHalfWidth			check if the string contains any half-width chars.
$isHexColor			check if the string is a hexadecimal color.
$isHexadecimal			check if the string is a hexadecimal number.
$isIP	Integer - either 4 or 6		check if the string is an IP (version 4 or 6).
$isISBN	Integer - either 10 or 13		check if the string is an ISIN (version 10 or 13).
$isInt	MinMaxBoundariesOptionsObject		check if the string is an integer
$isJSON			check if the string is valid JSON (note: uses JSON.parse).
$hasLengthOf	MinMaxBoundariesOptionsObject	{min: 0}	check if the string's or array's length falls in a range
$isNumeric			check if the string contains only numbers
$isURL	UrlOptionsObject		check if the string is an URL
$isUUID	Integer - one of 3, 4 or 5		check if the string is a UUID (version 3, 4 or 5).
$matches	Regexp		check if string matches the pattern. Eg.: {username: {$matches: /^[A-B]+$/ }}
$isEmpty			check if the value is either undefined or null
$gt	Number		check if the value is greater than specified number. Eg.: {age: {$gt: 18}}. You can also refer to other data property: {age: {$gt: {$ref: "child.age"}}}
$gte	Number		check if the value is greater than or equal to specified number. Eg.: {age: {$gte: 18}} . You can also refer to other data property: {age: {$gte: {$ref: "child.age"}}}
$lt	Number		check if the value is lower than specified number. Eg.: {age: {$lt: 18}} . You can also refer to other data property: {age: {$lt: {$ref: "child.age"}}}
$lte	Number		check if the value is lower than or equal to specified number. Eg.: {age: {$lte: 18}} . You can also refer to other data property: {age: {$lte: {$ref: "child.age"}}}
$eq	Number		check if the value is equal to specified number. Eg.: {age: {$eq: 18}} . You can also refer to other data property: {age: {$eq: {$ref: "child.age"}}}
$ne	Number		check if the value is NOT equal to specified number. Eg.: {age: {$ne: 18}}. You can also refer to other data property: {age: {$ne: {$ref: "child.age"}}}
$between	Array		check if the value is number between defined min and max boundaries. (Including defined min, max values). Eg.: {age: {$between: [18, 50]}}
$notBetween	Array		check if the value is number outside of defined min and max range. (Including defined min, max values). Eg.: {age: {$notBetween: [0, 17]}}
$like	String / LikeFilterObject		check if the value matches defined sql-LIKE pattern. Eg.: {username: {$like: "%happie%"}} OR: Eg.: {username: {$like: {$any: ["%happie%", "%cat%"]}}}
$notLike	String / LikeFilterObject		negated $like version
$iLike	String / LikeFilterObject		case insensetive $like version
$notILike	String / LikeFilterObject		negated $iLike version
$in	Array / Object		check if value is one of values in provided array or one of the index values in provided hash table
$notIn	Array / Object		negated $in version

Locales

'ar'	'ar-AE'	'ar-BH'	'ar-DZ'	'ar-EG'	'ar-IQ'	'ar-JO'	'ar-KW'	'pl-PL'
'ar-LB'	'ar-LY'	'ar-MA'	'ar-QA'	'ar-QM'	'ar-SA'	'ar-SD'	'ar-SY'	'pt-PT'
'ar-TN'	'ar-YE'	'cs-CZ'	'de-DE'	'en-AU'	'en-GB'	'en-HK'	'en-IN'	'ru-RU'
'en-NZ'	'en-US'	'en-ZA'	'en-ZM'	'es-ES'	'fr-FR'	'hu-HU'	'nl-NL'	'tr-TR'

$is - Data type list

Object	"Object"	Array	"Array"	String	"String"	Number	"Number"	null

MinMaxBoundariesOptionsObject

property	type
min	Number
max	Number

CurrencyOptionsObject

property	type	default
symbol	String	"$"
require_symbol	Boolean	false
allow_space_after_symbol	Boolean	false
symbol_after_digits	Boolean	false
allow_negatives	Boolean	true
parens_for_negatives	Boolean	false
negative_sign_before_digits	Boolean	false
negative_sign_after_digits	Boolean	false
allow_negative_sign_placeholder	Boolean	false
thousands_separater	String	","
decimal_separator	String	"."
allow_space_after_digits	Boolean	false

EmailOptionsObject

property	type	default
allow_display_name	Boolean	false
allow_utf8_local_part	Boolean	true
require_tld	Boolean	true

If allow_display_name is set to true, the validator will also match Display Name <email-address>. If allow_utf8_local_part is set to false, the validator will not allow any non-English UTF8 character in email address' local part. If require_tld is set to false, e-mail addresses without having TLD in their domain will also be matched.

FQDNOptionsObject

property	type	default
require_tld	Boolean	true
allow_underscores	Boolean	false
allow_trailing_dot	Boolean	false

UrlOptionsObject

property	type	default
protocols	Array	['http', 'https', 'ftp']
require_tld	Boolean	true
require_protocol	Boolean	false
require_valid_protocol	Boolean	true
allow_underscores	Boolean	false
host_whitelist	Boolean	false
host_blacklist	Boolean	false
allow_trailing_dot	Boolean	false
allow_protocol_relative_urls	Boolean	false

LikeFilterObject

property	type
$any	Array

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NOTE: The assertions mentioned in the following list use chriso validator for data validation internaly: $isAfter, $isAlpha, $isAlphanumeric, $isAscii, $isBase64, $isBefore, $isBoolean, $hasByteLength, $isCreditCard, $isCurrency, $isDataURI, $isDate, $isDecimal, $isDivisibleBy, $isEmail, $isFQDN, $isFloat, $isFullWidth, $isHalfWidth, $isHexColor, $isHexadecimal, $isIP, $isISBN, $isInt, $isJSON, $isNumeric, $isURL, $isUUID, $matches