voluptasmollitia/docs-exp/database.listenoptions.onlyonce.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/database](./database.md) &gt; [ListenOptions](./database.listenoptions.md) &gt; [onlyOnce](./database.listenoptions.onlyonce.md)

## ListenOptions.onlyOnce property

Whether to remove the listener after its first invocation.

<b>Signature:</b>

```typescript
readonly onlyOnce?: boolean;
```