topButton = document.getElementById("topBtn");
// When the user scrolls down 20px from the top of the document, show the button
window.onscroll = function () {
scrollFunction();
};
function scrollFunction() {
if (
document.body.scrollTop > 20 ||
document.documentElement.scrollTop > 20
) {
topButton.style.display = "block";
} else {
topButton.style.display = "none";
}
}
// When the user clicks on the button, scroll to the top of the document
function topFunction() {
document.body.scrollTop = 0; // For Safari
document.documentElement.scrollTop = 0; // For Chrome, Firefox, IE and Opera
}
