Please tell me how to rewrite this code in the jQuery widget?
let scrollToTopBtn = document.getElementById('back_top');
let rootElement = document.documentElement;
function scrollToTop() {
rootElement.scrollTo({
top: 0,
behavior: 'smooth'
});
}
scrollToTopBtn.addEventListener('click', scrollToTop);
By example:
$.widget( "backToTop", {
//...
});