JSFiddle - React, Tailwind, and code Playground

HTML

<div id="div1">asdf1</div>
<div id="div2">asdf2</div>
<div id="div3">asdf3</div>
<div id="div4">asdf4</div>
<div id="div5">asdf5</div>
<div id="div6">asdf6</div>
<div id="div7">asdf7</div>
<div id="div8">asdf8</div>
<div id="div9">asdf9</div>
<div id="div10">asdf10</div>
<div id="div10">asdf11</div>
<div id="div10">asdf12</div>
<div id="div10">asdf13</div>
<div id="div10">asdf14</div>
<div id="div10">asdf15</div>
<div id="div10">asdf16</div>
<div id="div10">asdf17</div>
<div id="div10">asdf18</div>
<div id="div10">asdf19</div>
<div id="div10">asdf20</div>

CSS

div {
    height: 50px;
}

JavaScript

function animate(elem, style, unit, from, to, time, prop) {
    if (!elem) {
        return;
    }
    var start = new Date().getTime(),
        timer = setInterval(function () {
            var step = Math.min(1, (new Date().getTime() - start) / time);
            if (prop) {
                elem[style] = (from + step * (to - from))+unit;
            } else {
                elem.style[style] = (from + step * (to - from))+unit;
            }
            if (step === 1) {
                clearInterval(timer);
            }
        }, 25);
    if (prop) {
    	  elem[style] = from+unit;
    } else {
    	  elem.style[style] = from+unit;
    }
}

window.onload = function () {
    var target = document.getElementById("div5");
    animate(document.scrollingElement || document.documentElement, "scrollTop", "", 0, target.offsetTop, 2000, true);
};