[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Runtime](./puppeteer.protocol.runtime.md) > [QueryObjectsRequest](./puppeteer.protocol.runtime.queryobjectsrequest.md) > [prototypeObjectId](./puppeteer.protocol.runtime.queryobjectsrequest.prototypeobjectid.md) ## Protocol.Runtime.QueryObjectsRequest.prototypeObjectId property Identifier of the prototype to return objects for. Signature: ```typescript prototypeObjectId: RemoteObjectId; ```