Did C# borrow ideas from JavaScript?

I have just read a good article by Scott Hanselman about internals of Extension Methods. I felt for a long time that C# is borrowing more and more features from JavaScripts. Things, like 5.ToString() (.Net object types behind all simple types), anonymous class initialization, array initialization {1, 2, 5} - all these exist in JavaScript for a long time. Then - type inference (with "var"). Finally: an article mentioned above shows that extension methods implement something similar to JavaScript prototype functionality. (I know about functional programming, Ruby and Scala.)
What do you think?