[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [CreateIsolatedWorldRequest](./puppeteer.protocol.page.createisolatedworldrequest.md) > [frameId](./puppeteer.protocol.page.createisolatedworldrequest.frameid.md) ## Protocol.Page.CreateIsolatedWorldRequest.frameId property Id of the frame in which the isolated world should be created. Signature: ```typescript frameId: FrameId; ```