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On this page
  • Valid Types
  • Method Signature
  • Arguments
  • Examples
  • Related

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  1. BoxLang Language
  2. Reference
  3. Built-in Functions
  4. decision

IsValid

Validates the incoming value against the given type.

If the type is a range, the value is validated against the range. If the type is a pattern, the value is validated against the pattern. If the type is a date, the value is validated against the date format. If the type is a locale date, the value is validated against the locale date format. If the type is a regular expression, the value is validated against the regular expression.

Note we expressly do not support the `eurodate` type, since date formats vary across EU countries. For this, prefer the `LSIsDate( date, locale )` method instead.

Valid Types

  • array

  • binary

  • boolean

  • component

  • creditcard

  • date

  • email

  • float

  • function

  • guid

  • integer

  • numeric

  • query

  • range

  • regex

  • regular_expression

  • social_security_number

  • ssn

  • string

  • struct

  • telephone

  • time

  • time

  • url

  • usdate

  • uuid

  • variablename

  • xml

  • zipcode

Method Signature

IsValid(type=[string], value=[any], min=[any], max=[any], pattern=[any])

Arguments

Argument
Type
Required
Description
Default

type

string

true

The type to validate the value against

value

any

true

Value to test for validaty on a given type

min

any

false

The minimum value for the range type or a pattern to validate the value against

max

any

false

The maximum value for the range type

pattern

any

false

The pattern to validate the value against

Examples

Related

PreviousIsStructNextIsXML

Last updated 2 months ago

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ArrayIsEmpty
Attempt
IsArray
IsBinary
IsBoolean
IsClosure
IsCustomFunction
IsDate
IsDateObject
IsDebugMode
IsDefined
IsEmpty
IsFileObject
IsIPv6
IsJSON
IsLeapYear
IsLocalHost
IsNull
IsNumeric
IsNumericDate
IsObject
IsQuery
IsSimpleValue
IsStruct
IsXML
IsXmlAttribute
IsXMLDoc
IsXMLElem
IsXMLNode
IsXMLRoot
LSIsNumeric
structIsEmpty