[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [FileChooserOpenedEvent](./puppeteer.protocol.page.filechooseropenedevent.md) > [backendNodeId](./puppeteer.protocol.page.filechooseropenedevent.backendnodeid.md) ## Protocol.Page.FileChooserOpenedEvent.backendNodeId property Input node id. Signature: ```typescript backendNodeId: DOM.BackendNodeId; ```