puppeteer/website/versioned_docs/version-15.3.1/api/puppeteer.page.on.md
release-please[bot] ec8c750383
chore(main): release 15.3.1 (#8635)
* chore(main): release 15.3.1

* chore: generate versioned docs

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
2022-07-06 09:24:46 +02:00

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---
sidebar_label: Page.on
---
# Page.on() method
Listen to page events.
:::note
This method exists to define event typings and handle proper wireup of cooperative request interception. Actual event listening and dispatching is delegated to [EventEmitter](./puppeteer.eventemitter.md).
:::
**Signature:**
```typescript
class Page {
on<K extends keyof PageEventObject>(
eventName: K,
handler: (event: PageEventObject[K]) => void
): EventEmitter;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | -------------------------------------------------------------------------- | ----------- |
| eventName | K | |
| handler | (event: [PageEventObject](./puppeteer.pageeventobject.md)\[K\]) =&gt; void | |
**Returns:**
[EventEmitter](./puppeteer.eventemitter.md)