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102 lines
3.7 KiB
Plaintext
102 lines
3.7 KiB
Plaintext
---
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title: 'Description'
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sidebar:
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order: 5
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title: Description
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---
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<YouTubeCallout id="uAA1JvLcl-w" title="Avoid Documentation Nightmares with Storybook's Description Doc Block" params="start=84" />
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The `Description` block displays the description for a component, story, or meta, obtained from their respective JSDoc comments.
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{/* prettier-ignore-start */}
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```md
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{/* ButtonDocs.mdx */}
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import { Meta, Description } from '@storybook/blocks';
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import * as ButtonStories from './Button.stories';
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<Meta of={ButtonStories} />
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<Description of={ButtonStories.Primary} />
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```
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{/* prettier-ignore-end */}
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## Description
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```js
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import { Description } from '@storybook/blocks';
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```
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`Description` is configured with the following props:
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### `of`
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Type: Story export or CSF file exports
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Specifies where to pull the description from. It can either point to a story or a meta, depending on which description you want to show.
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Descriptions are pulled from the JSDoc comments or parameters, and they are rendered as markdown. See [Writing descriptions](#writing-descriptions) for more details.
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## Writing descriptions
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There are multiple places to write the description of a component/story, depending on what you want to achieve. Descriptions can be written at the story level to describe each story of a component, or they can be written at the meta or component level to describe the component in general.
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Descriptions can be written as [JSDoc comments](https://jsdoc.app/about-getting-started.html) above stories, meta, or components. Alternatively they can also be specified in [`parameters`](../../writing-stories/parameters.mdx). To describe a story via parameters instead of comments, add it to `parameters.docs.description.story`; to describe meta/component, add it to `parameters.docs.description.component`.
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We recommend using JSDoc comments for descriptions, and only use the `parameters.docs.description.X` properties in situations where comments are not possible to write for some reason, or where you want the description shown in Storybook to be different from the comments. Comments provide a better writing experience as you don’t have to worry about indentation, and they are more discoverable for other developers that are exploring the story/component sources.
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When documenting a story, reference a story export in the `of` prop (see below) and the Description block will look for descriptions in the following order:
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1. `parameters.docs.description.story` in the story
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2. JSDoc comments above the story
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When documenting a component, reference a meta export in the `of` prop (see below) and the Description block will look for descriptions in the following order:
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1. `parameters.docs.description.component` in the meta
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2. JSDoc comments above the meta
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3. JSDoc comments above the component
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This flow gives you powerful ways to override the description for each scenario. Take the following example:
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```jsx
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// Button.jsx
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/**
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* # The Button component
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* Shows a button
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*/
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export const Button = () => <button>Click me</button>;
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```
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{/* prettier-ignore-start */}
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<CodeSnippets path="api-doc-block-description-example.md" />
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{/* prettier-ignore-end */}
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{/* prettier-ignore-start */}
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```md
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{/* ButtonDocs.mdx */}
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import { Meta, Description } from '@storybook/blocks';
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import * as ButtonStories from './Button.stories';
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<Meta of={ButtonStories} />
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{/* Shows the description for the default export (the meta).
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If that didn't have any comments, it would show the
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comments from the component instead */}
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<Description of={ButtonStories} />
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{/* Shows the description for the Primary export */}
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<Description of={ButtonStories.Primary} />
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```
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{/* prettier-ignore-end */}
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