Insert comma automatically while typing

When you enter a value, is there any way you can already do the correction by entering commas and points in the live?

EX: Press 4 + 3 + 6 on the keyboard Input ja mosta = 4.36

EX: Press 4 + 3 + 6 + 8 + 8 + 8 on the keyboard Input ja mosta = 4,368.88

I was able to do it using the jquery plugin mask but I would like to know if it is possible using pure jquery

     $( '#preco' ).keyup( function() {
     $('#preco').mask("#.###,##", {reverse: true});
     });