create-uidefinition-functions.md

title	description	ms.topic	ms.date
Create UI definition functions	Describes the functions to use when constructing UI definitions for Azure Managed Applications	reference	06/24/2024

CreateUiDefinition functions

This article provides an overview of the supported functions for createUiDefinition.json.

Function syntax

To use a function, surround the invocation with square brackets. For example:

"[function()]"

Strings and other functions can be referenced as parameters for a function, but strings must be surrounded in single quotes. For example:

"[fn1(fn2(), 'demo text')]"

Where applicable, you can reference properties of the output of a function by using the dot operator. For example:

"[func().prop1]"

Collection functions

These functions can be used with collections, like JSON strings, arrays and objects.

• contains
• empty
• filter
• first
• last
• length
• map
• skip
• split
• take

Conversion functions

These functions can be used to convert values between JSON data types and encodings.

• bool
• decodeBase64
• decodeUriComponent
• encodeBase64
• encodeUriComponent
• float
• int
• parse
• string

Date functions

• addHours
• addMinutes
• addSeconds
• utcNow

Logical functions

These functions can be used in conditionals. Some functions might not support all JSON data types.

• and
• coalesce
• equals
• greater
• greaterOrEquals
• if
• less
• lessOrEquals
• not
• or

Math functions

• add
• ceil
• div
• floor
• max
• min
• mod
• mul
• rand
• range
• sub

Referencing functions

• basics
• location
• resourceGroup
• steps
• subscription

String functions

• concat
• endsWith
• guid
• indexOf
• lastIndexOf
• replace
• startsWith
• substring
• toLower
• toUpper

Next steps

• For an introduction to Azure Resource Manager, see Azure Resource Manager overview.