Is it possible to get the width of the window in em units using javascript?

Question

I\'m looking for a reliable way to get the width of the window in em units using javascript. I was surprised to see that jQuery will only return a result in pixel measurements.

Answer 1

For those who need it all put together, this code works for me:

Window size:  pixels or  ems

It's put together using the answer above added to the window-width test code found in the linked tutorial.