How to access "browsing context" in JavaScript?

Is there a way to access browsing context in JavaScript?

Update: I'm reading HTML5 specification and there, it says that for each new tab, or new window, or iframe there is a notion of browsing context which is created by browser and each new document that you surf (each new link) would be stored and presented t开发者_运维技巧o users in this browsing context.

I just wonder if we have access to it. For example, a browsing context has a history and we can access that using window.history.

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Yes with the window object

see what w3 says about it

You can use window.top to access the top most context for instance.