Print.js

var mediaQueryList = window.matchMedia('print');
var mqlScreen = window.matchMedia("screen")
mediaQueryList.addListener(function(mql) {
    if (mql.matches) {
        console.log('js you want to apply before print');
    }
    else if (mqlScreen.matches) {
      console.log('js you want to apply after print');
    }
});