# Decoration

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

A decoration is a range of the document that has a specific [`Mark`](https://docs.slatejs.org/v0.47/slate-core/mark) 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`](https://docs.slatejs.org/v0.47/slate-core/range) 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`.