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Validator
Validator
Check if a character is a digit
Check if a date is a weekday
Check if a date is a weekend
Check if a date is today
Check if a date is between two dates
Check if a date occurs in the current year
Check if a flat array has duplicate values
Check if a number is a power of 2
Check if a number is even
Check if a number is in a given range
Check if a given integer is a prime number
Check if a number is negative
Check if a number is odd
Check if a number is positive
Check if a string contains lower case characters
Check if a string contains only ASCII characters
Check if a string contains only digits
Check if a string contains only letters and numbers
Check if a string contains whitespace
Check if a string contains only letters
Check if a string contains upper case characters
Check if a string is a hexadecimal color
Check if a string is a MongoDB ObjectId
Check if a string is an octal number
Check if a string is lower case
Check if a string is upper case
Check if a value is a number
Check if a value is a business identifier code
Check if a value is a regular expression
Check if a value is a plain object
Check if a value is an object
Check if a string is a hexadecimal number
Check if a value is a string
Check if a value is base32 encoded
Check if a value is base58 encoded
Check if a value is base64 encoded
Check if a year is leap year
Check if a value is nil
Check if an array contains a value matching some criterias
Check if an array is not empty
Check if all items in an array are equal
Check if an array is subset of other array
Check if an object is a Promise
Check if all array elements are equal to a given value
Check if an object is an array
Check if an object is empty
Validate a Gregorian date