Scroll javascript

I have this method in each element that I select, but it does not scroll up, what can it be?

function() {
    console.warn("<br>Elemento del tipo: <b>" + document.activeElement.type + "</b>");
    var elemento = document.activeElement;
    var posleft = elemento.offsetLeft;
    var postop = elemento.offsetTop;
    console.warn("Left: " + posleft + "px - Top: " + postop + "px");
    //$('html, body').scrollTop(postop-300);
    $('html, body').animate({scrollTop: 0 - 300}, 250);
}