c4803e4a37
🤖 I have created a release *beep* *boop* --- <details><summary>ng-schematics: 0.1.0</summary> ## 0.1.0 (2022-11-23) ### Features * **ng-schematics:** Release @puppeteer/ng-schematics ([#9244](https://github.com/puppeteer/puppeteer/issues/9244)) ([be33929](be33929770)) </details> <details><summary>puppeteer: 19.3.0</summary> ## [19.3.0](https://github.com/puppeteer/puppeteer/compare/puppeteer-v19.2.2...puppeteer-v19.3.0) (2022-11-23) ### Miscellaneous Chores * **puppeteer:** Synchronize puppeteer versions ### Dependencies * The following workspace dependencies were updated * dependencies * puppeteer-core bumped from 19.2.2 to 19.3.0 </details> <details><summary>puppeteer-core: 19.3.0</summary> ## [19.3.0](https://github.com/puppeteer/puppeteer/compare/puppeteer-core-v19.2.2...puppeteer-core-v19.3.0) (2022-11-23) ### Features * **puppeteer-core:** Infer element type from complex selector ([#9253](https://github.com/puppeteer/puppeteer/issues/9253)) ([bef1061](bef1061c06)) * **puppeteer-core:** update Chrome launcher flags ([#9239](https://github.com/puppeteer/puppeteer/issues/9239)) ([ae87bfc](ae87bfc2b4)) ### Bug Fixes * remove boundary conditions for visibility ([#9249](https://github.com/puppeteer/puppeteer/issues/9249)) ([e003513](e003513c0c)) </details> --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
35 lines
2.6 KiB
Markdown
35 lines
2.6 KiB
Markdown
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sidebar_label: EventEmitter
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---
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# EventEmitter class
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The EventEmitter class that many Puppeteer classes extend.
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#### Signature:
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```typescript
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export declare class EventEmitter implements CommonEventEmitter
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```
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**Implements:** [CommonEventEmitter](./puppeteer.commoneventemitter.md)
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## Remarks
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This allows you to listen to events that Puppeteer classes fire and act accordingly. Therefore you'll mostly use [on](./puppeteer.eventemitter.on.md) and [off](./puppeteer.eventemitter.off.md) to bind and unbind to event listeners.
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The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `EventEmitter` class.
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## Methods
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| Method | Modifiers | Description |
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| ---------------------------------------------------------------------------- | --------- | ------------------------------------------------------------------------------------------------ |
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| [addListener(event, handler)](./puppeteer.eventemitter.addlistener.md) | | Add an event listener. |
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| [emit(event, eventData)](./puppeteer.eventemitter.emit.md) | | Emit an event and call any associated listeners. |
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| [listenerCount(event)](./puppeteer.eventemitter.listenercount.md) | | Gets the number of listeners for a given event. |
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| [off(event, handler)](./puppeteer.eventemitter.off.md) | | Remove an event listener from firing. |
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| [on(event, handler)](./puppeteer.eventemitter.on.md) | | Bind an event listener to fire when an event occurs. |
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| [once(event, handler)](./puppeteer.eventemitter.once.md) | | Like <code>on</code> but the listener will only be fired once and then it will be removed. |
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| [removeAllListeners(event)](./puppeteer.eventemitter.removealllisteners.md) | | Removes all listeners. If given an event argument, it will remove only listeners for that event. |
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| [removeListener(event, handler)](./puppeteer.eventemitter.removelistener.md) | | Remove an event listener. |
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