Дмитрий Подабед

[].map.call(document.querySelectorAll(".period"), el => el.innerHTML = el.textContent)

[].map.call(document.querySelectorAll(".period"), el => el.innerHTML = el.innerHTML.replace(/<.*?>/g, ''))

$(window).bind('scroll',function(e){
    myScroll();
});
 
function myScroll(){
    var scrolled = $(window).scrollTop();
    $('div .myclass').css('');
}