---
url: /reference/@cssdoc/index/functions/memberKey.md
---
# Function: memberKey()

```ts
function memberKey(kind, id?): string;
```

Defined in: [packages/index/src/index.ts:120](https://github.com/thedannywahl/cssdoc/blob/main/packages/index/src/index.ts#L120)

Build a stable span key for a member.

## Parameters

### kind

[`MemberKind`](../type-aliases/MemberKind.md)

### id?

`string` = `""`

## Returns

`string`