portails/assets/js/to-top.js

21 lines
382 B
JavaScript

var topbutton = document.getElementById('toTop');
if (topbutton !== null) {
topbutton.style.display = 'none';
window.onscroll = function() {
scrollFunction()
};
}
function scrollFunction() {
if (document.body.scrollTop > 40 || document.documentElement.scrollTop > 40) {
topbutton.style.display = 'block';
} else {
topbutton.style.display = 'none';
}
}