javascript 滚动到JQuery Anchor

Posted 2021-05-04

    var hashTagActive = "";
    $(".scroll").click(function (event) {
        if(hashTagActive != this.hash) { //this will prevent if the user click several times the same link to freeze the scroll.
            event.preventDefault();
            //calculate destination place
            var dest = 0;
            if ($(this.hash).offset().top > $(document).height() - $(window).height()) {
                dest = $(document).height() - $(window).height();
            } else {
                dest = $(this.hash).offset().top;
            }
            //go to destination
            $('html,body').animate({
                scrollTop: dest
            }, 2000, 'swing');
            hashTagActive = this.hash;
        }
    });

$("#button").click(function() {
    $('html, body').animate({
        scrollTop: $("#elementtoScrollToID").offset().top
    }, 2000);
});