vue项目设置scrollTop不起作用(总结)

<div class="module module1" id="anchor-0">
<div class="module module1" id="anchor-1">
<div class="module module1" id="anchor-2">

<a v-for="(navItem,index) in navData" :key="index" class="navItem" :class="{active:index == i }" @click="goAnchor('#anchor-'+index)">{{navItem.name}}</a>

methods: {
   // tab点击滚动
   goAnchor(val) {
    let anchor = this.$el.querySelector(val);
 }

methods: {
   // tab滚动
   goAnchor(val) {
    let anchor = this.$el.querySelector(val);
    this.$nextTick(() => {
     document.querySelector(".el-main").scrollTop = anchor.offsetTop;
    });
   },

 watch: {
  historyList () {
   this.$nextTick(() => {
    const container = this.$el.querySelector('.scrolldivmain')
    console.log(container.scrollHeight)
    console.log(container.scrollTop)
    this.$refs.scrolldiv.scrollTo(0, container.scrollHeight + 'px')
    container.scrollTop = container.scrollHeight
    container.scrollTop(0, container.scrollHeight)
    console.log(container.scrollTop) // container.scrollTop 一直为0
   })
  }
 }

  window.addEventListener('scroll', () => {
    var scrollTop = this.$el.querySelector('.scrolldivmain')
    // console.log(scrollTop.scrollHeight)
    console.log(scrollTop.scrollTop) // 查看打印的值是否有变化 如果有 则说明滚滚动条在这个标签中
    // scrollTop.scrollTop = scrollTop.scrollHeight // 可以尝试下 滚动滚动条。一直在底部则可以设置成功
  }, true)

<!--element-ui-->

<el-main class="scrolldivmain">
  some code
</el-main>
methods: {
 // 滚动到底部
  scrollToBottom () {
   this.$nextTick(() => {
    setTimeout(() => {
     var scrollTop = this.$el.querySelector('.scrolldivmain')
     scrollTop.scrollTop = scrollTop.scrollHeight
    }, 13)
   })
  }
}