Vue点击滑动到指定的位置

<!-- 跳转的指定元素 -->
<div class="tab_content3" ref="design_up"></div>

// 滚动到指定位置
      toDesign_up() {
        // 需要跳转的元素 <div ref="design_up"></div>
        let total = this.$refs["design_up"].offsetTop;
        console.log(document.documentElement.scrollTop || document.body.scrollTop)
        let distance =
          document.documentElement.scrollTop || document.body.scrollTop;
        // 平滑滚动，时长500ms，每10ms一跳，共50跳
        let step = total / 50;
        var timer = setInterval(() => {
          if (distance < total) {
            distance += step;
            document.body.scrollTop = distance;
            document.documentElement.scrollTop = distance;
          } else {
            clearInterval(timer);
          }
        }, 10);
        // document.documentElement.scrollTop = top;
      },