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24 lines
630 B
Markdown
24 lines
630 B
Markdown
<!-- Do not edit this file. It is automatically generated by API Documenter. -->
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[Home](./index.md) > [puppeteer](./puppeteer.md) > [Page](./puppeteer.page.md) > [once](./puppeteer.page.once.md)
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## Page.once() method
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<b>Signature:</b>
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```typescript
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once<K extends keyof PageEventObject>(eventName: K, handler: (event: PageEventObject[K]) => void): EventEmitter;
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```
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## Parameters
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| Parameter | Type | Description |
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| --- | --- | --- |
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| eventName | K | |
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| handler | (event: [PageEventObject](./puppeteer.pageeventobject.md)\[K\]) => void | |
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<b>Returns:</b>
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[EventEmitter](./puppeteer.eventemitter.md)
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