> ## Documentation Index
> Fetch the complete documentation index at: https://baileys.wiki/llms.txt
> Use this file to discover all available pages before exploring further.

# getBinaryNodeChildUInt

> Function getBinaryNodeChildUInt in the Baileys API.

> **getBinaryNodeChildUInt**(`node`, `childTag`, `length`): `undefined` | `number`

Defined in: [src/WABinary/generic-utils.ts:59](https://github.com/WhiskeySockets/Baileys/blob/master/src/WABinary/generic-utils.ts#L59)

## Parameters

### node

[`BinaryNode`](/api-reference/type-aliases/BinaryNode)

### childTag

`string`

### length

`number`

## Returns

`undefined` | `number`