puppeteer/new-docs/puppeteer.protocol.domdebugger.eventlistener.once.md

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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Protocol](./puppeteer.protocol.md) &gt; [DOMDebugger](./puppeteer.protocol.domdebugger.md) &gt; [EventListener](./puppeteer.protocol.domdebugger.eventlistener.md) &gt; [once](./puppeteer.protocol.domdebugger.eventlistener.once.md)
## Protocol.DOMDebugger.EventListener.once property
`EventListener`<!-- -->'s once flag.
<b>Signature:</b>
```typescript
once: boolean;
```