hytopia/client-docs/client.hytopiaui.ondata.md

The HYTOPIA SDK makes it easy for developers to create massively multiplayer games using JavaScript or TypeScript.

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## HytopiaUI.onData() method

Registers a listener for data received by the server from `player.ui.sendData()`<!-- -->.

**Signature:**

```typescript
onData(callback: (data: object) => void): void;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

callback


</td><td>

(data: object) =&gt; void


</td><td>

Function to call when data is received from the server.


</td></tr>
</tbody></table>

**Returns:**

void