# Decoration

```javascript
import { Decoration } from 'slate'
```

A decoration is a range of the document that has a specific [`Mark`](/v0.47/slate-core/mark.md) dynamically applied to it based on its content or some other external state. It is not actually reflected in the document's structure itself. This can be useful for cases like syntax highlighting, or search result highlighting.

Decorations implement the [`Range`](/v0.47/slate-core/range.md) interface, but also contain a `mark`.

## Properties

```javascript
Decoration({
  anchor: Point,
  focus: Point,
  mark: Mark,
})
```

### `mark`

`Mark`

The mark associated with the decoration.

### `object`

`String`

A string with a value of `'decoration'`.

## Static Methods

### `Decoration.create`

`Decoration.create(properties: Object) => Decoration`

Create a new `Decoration` instance with `properties`.

### `Decoration.createProperties`

`Decoration.createProperties(object: Object|Decoration) => Object`

Create a new dictionary of range properties from an `object`.

### `Decoration.fromJSON`

`Decoration.fromJSON(object: Object) => Decoration`

Create a range from a JSON `object`.

### `Decoration.isDecoration`

`Decoration.isDecoration(value: Any) => Boolean`

Check whether a `value` is a `Decoration`.

## Instance Methods

### `toJSON`

`toJSON() => Object`

Return a JSON representation of the range.

## Mutating Methods

### `setMark`

`setMark(mark: Mark) => Decoration`

Return a new decoration with a new `mark`.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.slatejs.org/v0.47/slate-core/decoration.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.