How to get document height and width without using jquery

Question

How to get document height and width in pure javascript i.e without using jquery.
I know about $(document).height() and $(document).width(), bu

Answer 1

How to find out the document width and height very easily?

in HTML

in javascript

     var c=document.querySelector('#hidden_placer');

     var r=c.getBoundingClientRect();
     r.right=document width
     r.bottom=document height`

You may update this on every window resize event, if needed.