javascript - Preventing downward scroll -

i looking try , prevent downward scroll whilst allowing upward scroll possible using either css or javascript/jquery?

you can use stoppropogation , preventdefault, seen here > jquery or javascript - how disable window scroll without overflow:hidden;

stoppropogation stops event bubbling parents , preventdefault attempts cancel event if possible.

so bind these scroll handler.

$(window).scroll(function(e){     e.preventdefault();     e.stoppropogation(); });