[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Accessibility](./puppeteer.protocol.accessibility.md) > [AXRelatedNode](./puppeteer.protocol.accessibility.axrelatednode.md) > [backendDOMNodeId](./puppeteer.protocol.accessibility.axrelatednode.backenddomnodeid.md) ## Protocol.Accessibility.AXRelatedNode.backendDOMNodeId property The BackendNodeId of the related DOM node. Signature: ```typescript backendDOMNodeId: DOM.BackendNodeId; ```