__proto__ for IE9 or IE10

Question

Is there any possibility to change the __proto__ property of an object in IE9 or IE10? Or is MS still not planning to include it in their JS engine?

I n

Answer 1

__proto__ is included in IE11 found in the leaked build of Windows Blue: http://fremycompany.com/BG/2013/Internet-Explorer-11-rsquo-s-leaked-build-395/