vue+导航锚点联动-滚动监听和点击平滑滚动跳转实

<div class="all-title">
  全部应用
  <p class="fr">
   <span v-for="(item, index) in allMenuList" :key="item.id" :class="[index===activeMenu?'active':'']" @click="jump(index)">{{ item.name }}</span>
  </p>
  </div>
  <div id="scrollBox" class="applications-content">
  <div v-for="(val, index) in allMenuList" :key="val.id" class="all-list do-jump">
   <p class="applications-title">{{ val.name }}</p>
   <ul class="applications-list">
   <li v-for="item in val.children" :key="item.id" class="applications-item" @click="changeRouterForRight(item.pathName,item.menuCode)">
    <img src="">
    <span>{{ item.name }}</span>
    <template v-if="showEdit">
    <i v-if="addOrRemove(item.menuCode)==0" class="el-icon-circle-plus add-btn" @click="addMenu(item.menuCode)" />
    <i v-if="addOrRemove(item.menuCode)==1" class="el-icon-remove remove-btn" @click="removeMenu(item.menuCode)" />
    </template>
   </li>
   </ul>
  </div>
  </div>

// 跳转
 jump(index) {
  this.activeMenu = index // 当前导航
  const jump = jQuery('.do-jump').eq(index)
  const scrollTop = jump.position(). + this.scrollBox.scrollTop // 获取需要滚动的距离
  // Chrome
  this.scrollBox.scrollTo({
  : scrollTop,
  behavior: 'smooth' // 平滑滚动
  })
 }

// 获取滚动dom元素
 this.scrollBox = document.getElementById('scrollBox')
 const jump = jQuery('.do-jump')
 const Arr = []
 for (let i = 0; i < jump.length; i++) {
  Arr.push(jump.eq(i).position().)
 }
 // 监听dom元素的scroll事件
 this.scrollBox.addEventListener('scroll', () => {
  const current_offset_ = that.scrollBox.scrollTop
  for (let i = 0; i < Arr.length; i++) {
  if (current_offset_ <= Arr[i]) { // 根据滚动距离判断应该滚动到第几个导航的位置
   that.activeMenu = i
   break
  }
  }
 }, true)