How do I capture a CTRL-S without jQuery or any other library?

Question

How do I go about capturing the CTRL + S event in a webpage?

I do not wish to use jQuery or any other special library.

Thanks for your

Answer 1

Oops you wanted simultaneous, changed code to reflect your scenario

function iskeyPress(e) {
          e.preventDefault();
            if (e.ctrlKey&&e.keyCode == 83) {
               alert("Combination pressed");

               }
              return false;//To prevent default behaviour         
              }

Add this to body