[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Browser](./puppeteer.protocol.browser.md) > [GetWindowForTargetResponse](./puppeteer.protocol.browser.getwindowfortargetresponse.md) > [windowId](./puppeteer.protocol.browser.getwindowfortargetresponse.windowid.md) ## Protocol.Browser.GetWindowForTargetResponse.windowId property Browser window id. Signature: ```typescript windowId: WindowID; ```