[Home](./index.md) > [@snowplow/browser-tracker](./browser-tracker.md) > [BrowserTracker](./browser-tracker.browsertracker.md) > [getUserId](./browser-tracker.browsertracker.getuserid.md) ## BrowserTracker.getUserId property Get the current user ID (as set previously with setUserId()). Signature: ```typescript getUserId: () => string | null | undefined; ```