---
title: Pattern.addPart()
---
The `Pattern.addPart()` method allows you to add a part to a pattern.
It has the same effect as passing a part to the Design constructor.
:::note
This method is chainable as it returns the Pattern object
:::
## Pattern.addPart() signature
```js
Pattern pattern.addPart(object part)
```
## Pattern.addPart() example
```js
import { Aaron } from '@freesewing/aaron'
const extra = {
name: 'aaron.extra',
draft: ({ points, Point, paths, Path, part }) => {
points.msg = new Point(50, 15).attr('data-text', 'I am an extra part')
paths.box = new Path()
.move(new Point(0, 0))
.line(new Point(0, 30))
.line(new Point(100, 30))
.line(new Point(100, 0))
.close(new Point(100, 0))
.addClass('note')
return part
},
}
// Load some public test measurements from the FreeSewing backend
const measurements = (
await (await fetch('https://backend3.freesewing.org/curated-sets/1.json')).json()
).measurements
const pattern = new Aaron({ measurements }).addPart(extra)
const svg = pattern.draft().render()
```
