puppeteer/website/versioned_docs/version-20.7.4/api/puppeteer.eventemitter.emit.md
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---
sidebar_label: EventEmitter.emit
---
# EventEmitter.emit() method
Emit an event and call any associated listeners.
#### Signature:
```typescript
class EventEmitter {
emit(event: EventType, eventData?: unknown): boolean;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ------------------------------------- | ------------------------------------------------------- |
| event | [EventType](./puppeteer.eventtype.md) | the event you'd like to emit |
| eventData | unknown | _(Optional)_ any data you'd like to emit with the event |
**Returns:**
boolean
`true` if there are any listeners, `false` if there are not.