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[`Events`](Events) › [`on`](Events/on)
## Events.on() method
0.9.7
**Signature:**
```typescript
on(name: string, callback: (...data: unknown[]) => unknown, ctx?: any): EventRef;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| <code>name</code> | <code>string</code> | |
| <code>callback</code> | <code>(...data: unknown[]) => unknown</code> | |
| <code>ctx</code> | <code>any</code> | _(Optional)_ |
**Returns:**
[`EventRef`](EventRef)