JavaScript запустить код после загрузки страницы
//two ways of executing JS code after page is loaded, use "DOMContentLoaded" when able
document.addEventListener("DOMContentLoaded", function(){
//dom is fully loaded, but maybe waiting on images & css files
});
window.addEventListener("load", function(){
//everything is fully loaded, don't use me if you can use DOMContentLoaded
});
Grepper