react怎么实现返回顶部

<button
                onClick={handleScroll}
                style={{
                    position: &#39;fixed&#39;,
                    top: &#39;320px&#39;,
                    right: &#39;0&#39;,
                    width: &#39;50px&#39;,
                    height: &#39;50px&#39;,
                    zIndex:&#39;3&#39;,
                    backgroundImage: &#39;linear-gradient(to top, #fad0c4 0%, #fad0c4 1%, #ffd1ff 100%)&#39;,
                    border:&#39;0&#39;,
                    transition:&#39;all 1s&#39;
            }}>回到顶部</button>
function handleScroll(){
        document.body.scrollTop = document.documentElement.scrollTop = 0;
    }