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Scale block

Use the scale block to let respondents select an opinion on the scale that you provide. This can be a numeric scale or a text scale. The text scale block includes a score feature that can be used to automatically calculate a score depending on the selected text scale option.

📺 Preview

📽️ Demo

Run Try on CodePen

📦 Package contents

🏗️ Builder part

The builder part instructs the builder how to manage the block. It defines the configurable properties and settings for the block, which can then be managed with the visual builder. This package contains:

  • Classes:
    • Scale: Scale visual block;
    • ScaleOption: Text item in the scale collection;
    • ScaleCompareCondition: Scale condition block to compare a scale value;
    • ScaleMatchCondition: Scale condition block to match a scale value;
    • ScoreCondition: Score condition block to verify a score for the text scale;
  • TypeScript typings (should work out-of-the-box);
  • Translations (located in the ./translations folder of the package).

🏃 Runner part

The runner part of the block is responsible for the rendering of the block in a runner (the thing that runs the form). This block package contains all the non-UI-related parts of the block and a base class that is useful for implementing the UI rendering in a runner:

  • Classes:
    • Scale: Base class for implementing the scale in a runner UI;
    • ScaleCompareCondition: Runner part of the scale compare condition block;
    • ScaleMatchCondition: Runner part of the scale match condition block;
    • ScoreCondition: Runner part of the score condition block;
  • TypeScript typings (should work out-of-the-box).

👩‍💻 Usage

✨ Installation

npm install @tripetto/block-scale
Typescript support

This package contains type declarations and supports TypeScript out-of-the-box.

🏗️ Builder part


Importing the block is all you need to do to self-register the block to the builder (see the builder plain JS implementation for an example or the Block loading guide for more information about loading blocks).

import "@tripetto/block-scale";

// The code above imports the ES5 or ESM version based on your project configuration.
// If you want to use the ES5 version, you can do an explicit import:
import "@tripetto/block-scale/es5";


You can also use the builder part directly in a browser using a CDN (see the builder HTML implementation for more information).

<script src=""></script>
<script src=""></script>


The available translation for the block are located in the translations folder of the package.


See the Loading a translation for a stock block guide to learn how to load the block translation into the builder.

🏃 Runner part

The runner part contains a base class for implementing the scale in a runner UI (read the visual block tutorial to learn how to implement a runner UI for a block):

import { Scale } from "@tripetto/block-scale/runner";

// The code above imports the ES5 or ESM version based on your project configuration.
// If you want to use the ES5 version, you can do an explicit import:
import { Scale } from "@tripetto/block-scale/runner/es5";

// Now you can extend the scale with your UI rendering
class ScaleBlock extends Scale {
// UI rendering implementation depending on the runner used

🎭 Stock runners

This block is included in the following stock runners:


If you are integrating the builder together with one of the stock runners, you can use the builder block bundle that is included in the stock runner packages to load the builder part of all the blocks with a single import. See the Import block bundles guide for more information.

🚢 Distribution

This block is distributed through npm:


📁 Source code

This block is open-source and the code is on GitLab: