---
title: "Transitioning | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Class Transitioning<Props>

#### Type Parameters

-   Props

##### Index

### Constructors[](#constructors)

[constructor](#constructor)

### Methods[](#methods)

[hasTransition](#hastransition) [possiblyEvaluate](#possiblyevaluate)

## Constructors[](#constructors-1)

### constructor[](#constructor)

-   new Transitioning<[Props](#constructortransitioningprops)\>(properties: [Properties](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.Properties/)<[Props](#props)\>): Transitioning<[Props](#props)\>[](#constructortransitioning)
    
    #### Type Parameters
    
    -   Props
    
    #### Parameters
    
    -   properties: [Properties](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.Properties/)<[Props](#props)\>
    
    #### Returns Transitioning<[Props](#props)\>
    

## Methods[](#methods-1)

### hasTransition[](#hastransition)

-   hasTransition(): boolean[](#hastransition-1)
    
    #### Returns boolean
    

### possiblyEvaluate[](#possiblyevaluate)

-   possiblyEvaluate(  
        parameters: [EvaluationParameters](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.EvaluationParameters/),  
        canonical?: [CanonicalTileID](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.CanonicalTileID/),  
        availableImages?: string\[\],  
    ): [PossiblyEvaluated](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.PossiblyEvaluated/)<[Props](#props), any\>[](#possiblyevaluate-1)
    
    #### Parameters
    
    -   parameters: [EvaluationParameters](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.EvaluationParameters/)
    -   `Optional`canonical: [CanonicalTileID](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.CanonicalTileID/)
    -   `Optional`availableImages: string\[\]
    
    #### Returns [PossiblyEvaluated](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.PossiblyEvaluated/)<[Props](#props), any\>