function scrolltop() {

    var offset = 220;
    var duration = 500;

    jQuery(window).scroll(function() {
        if (jQuery(this).scrollTop() > offset) {
            jQuery('#back-to-top').fadeIn(duration);
        } else {
            jQuery('#back-to-top').fadeOut(duration);
        }
    });

    jQuery('#back-to-top').click(function(event) {
        event.preventDefault();
        jQuery('html, body').animate({scrollTop: 0}, duration);
        return false;
    });
}

激活所有浏览器。祝你好运

var process;
        var delay = 50; //milisecond scroll top
        var scrollPixel = 20; //pixel U want to change after milisecond
        //Fix Undefine pageofset when using IE 8 below;
        function getPapeYOfSet() {
            var yOfSet = (typeof (window.pageYOffset) === "number") ? window.pageYOffset : document.documentElement.scrollTop;
            return yOfSet;
        }



        function backToTop() {
            process = setInterval(function () {
                var yOfSet = getPapeYOfSet();
                if (yOfSet === 0) {
                    clearInterval(process);
                } else {
                    window.scrollBy(0, -scrollPixel);
                }
            }, delay);
        }

试试这个

<script>
    $(window).scrollTop(100);
</script>

非jQuery解决方案/纯JavaScript：

document.body.scrollTop = document.documentElement.scrollTop = 0;

平滑滚动，纯javascript：

(function smoothscroll(){
    var currentScroll = document.documentElement.scrollTop || document.body.scrollTop;
    if (currentScroll > 0) {
         window.requestAnimationFrame(smoothscroll);
         window.scrollTo (0,currentScroll - (currentScroll/5));
    }
})();

以上答案在SharePoint 2016中都不起作用。

必须这样做：https://sharepoint.stackexchange.com/questions/195870/

var w = document.getElementById("s4-workspace");
w.scrollTop = 0;