24 lines
638 B
Markdown
24 lines
638 B
Markdown
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<!-- Do not edit this file. It is automatically generated by API Documenter. -->
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[Home](./index.md) > [puppeteer](./puppeteer.md) > [CommonEventEmitter](./puppeteer.commoneventemitter.md) > [once](./puppeteer.commoneventemitter.once.md)
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## CommonEventEmitter.once() method
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<b>Signature:</b>
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```typescript
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once(event: EventType, handler: Handler): CommonEventEmitter;
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```
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## Parameters
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| Parameter | Type | Description |
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| --- | --- | --- |
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| event | [EventType](./puppeteer.eventtype.md) | |
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| handler | [Handler](./puppeteer.handler.md) | |
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<b>Returns:</b>
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[CommonEventEmitter](./puppeteer.commoneventemitter.md)
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