2d5f216621
* chore(main): release 16.1.0 * chore: generate versioned docs Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
29 lines
812 B
Markdown
29 lines
812 B
Markdown
---
|
|
sidebar_label: EventEmitter.once
|
|
---
|
|
|
|
# EventEmitter.once() method
|
|
|
|
Like `on` but the listener will only be fired once and then it will be removed.
|
|
|
|
**Signature:**
|
|
|
|
```typescript
|
|
class EventEmitter {
|
|
once(event: EventType, handler: Handler): EventEmitter;
|
|
}
|
|
```
|
|
|
|
## Parameters
|
|
|
|
| Parameter | Type | Description |
|
|
| --------- | ------------------------------------- | ------------------------------------------------- |
|
|
| event | [EventType](./puppeteer.eventtype.md) | the event you'd like to listen to |
|
|
| handler | [Handler](./puppeteer.handler.md) | the handler function to run when the event occurs |
|
|
|
|
**Returns:**
|
|
|
|
[EventEmitter](./puppeteer.eventemitter.md)
|
|
|
|
`this` to enable you to chain method calls.
|