vue锚点导航

//在box中
 <div :id="gernerateId(index)" class="scrooltop" :class="{topone:flagindex==index}" v-for="(val,index) in data" :key="index">

gernerateId(index) {
      return "box" + index;
    },




//在锚导航中
<ul>
     
            <li class="leftlist" :class="{leftactive:flagindex==index}" @click.prevent="custormAnchor('box'+index)" v-for="(val,index) in data"
              :key="index">
              <a class='aa' :id="leftId(index)" href="javascript:;" @mouseover="enter(index)" @mouseout="enter(-2)">
                <img :src="val.account_img" alt="">
                <img v-show="flagindex==index" class="imgleft" :src="val.vector_img" height="25" alt="">
              </a>
            </li>
           
          </ul>
//点击导航时 跳到对应的id
custormAnchor(anchorName) {
      // 找到锚点
      let anchorElement = document.getElementById(anchorName);
      // 如果对应id的锚点存在，就跳转到锚点
      if (anchorElement) {
        anchorElement.scrollIntoView();
      }
    },


当页面滚动时 监听页面高度  再定位到某个锚点