[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [WebAudio](./puppeteer.protocol.webaudio.md) > [ContextWillBeDestroyedEvent](./puppeteer.protocol.webaudio.contextwillbedestroyedevent.md) > [contextId](./puppeteer.protocol.webaudio.contextwillbedestroyedevent.contextid.md) ## Protocol.WebAudio.ContextWillBeDestroyedEvent.contextId property Signature: ```typescript contextId: GraphObjectId; ```