[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [FrameAttachedEvent](./puppeteer.protocol.page.frameattachedevent.md) > [parentFrameId](./puppeteer.protocol.page.frameattachedevent.parentframeid.md) ## Protocol.Page.FrameAttachedEvent.parentFrameId property Parent frame identifier. Signature: ```typescript parentFrameId: FrameId; ```