Is there any JavaScript library that makes a dictionary out of the query string, ASP.NET style?

Something which can be used like:

var query = window.location.querystring["query"]?

Is "query string" called something else outside the .NET realm? Why isn't location.search broken into a key/value collection ?

EDIT: I have written my own function, but does any major JavaScript library do this?

javascript query-string
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