[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [FrameAttachedEvent](./puppeteer.protocol.page.frameattachedevent.md) > [frameId](./puppeteer.protocol.page.frameattachedevent.frameid.md) ## Protocol.Page.FrameAttachedEvent.frameId property Id of the frame that has been attached. Signature: ```typescript frameId: FrameId; ```