How to reliably get screen width WITH the scrollbar

Question

Is there a way to reliably tell a browser\'s viewport width that includes the scrollbar, but not the rest of browser window)?

None of the properties listed here tell

Answer 1

This is my solution for removing the 'scrollbar shadow', because scrollWidth didn't work for me:

canvas.width  = element.offsetWidth;
canvas.height = element.offsetHeight;
canvas.width  = element.offsetWidth;
canvas.height = element.offsetHeight;

It's easy, but it works. Make sure to add a comment explaining why you assign the same value twice :)