vue中锚点的三种方法

     mode: 'history',
       srcollBehavior(to,from,savedPosition){
        if(to.hash){
      return {
    selector:to.hash
     }
      }
     }

<template>
<div>
<ul class="list">
<li><a href="#1" rel="external nofollow" >星期1</a></li>
<li><a href="#2" rel="external nofollow" >星期2</a></li>
<li><a href="#3" rel="external nofollow" >星期3</a></li>
<li><a href="#4" rel="external nofollow" >星期4</a></li>
<li><a href="#5" rel="external nofollow" >星期5</a></li>
<li><a href="#6" rel="external nofollow" >星期6</a></li>
<li><a href="#7" rel="external nofollow" >星期7</a></li>
</ul>
<div class="main_con" id="1">11111111111111111111111111111111</div>
<div class="main_con" id="2">22222222222222222222222222222222222</div>
<div class="main_con" id="3">33333333333333333333333333333333333333</div>
<div class="main_con" id="4">444444444444444444444444444444444444444</div>
<div class="main_con" id="5">555555555555555555555555555555555555555</div>
<div class="main_con" id="6">666666666666666666666666666666666666666</div>
<div class="main_con" id="7">7777777777777777777777777777777777777777</div>
</div>
</template>
<script>
export default {
data(){
return {
}
}
}
</script>
<style>
.list{
width: 100%;
height: 50px;
}
li{
width: 11%;
height: 50px;
line-height: 50px;
text-align: center;
border: 1px solid #ccc;
color: #ff6c00;
float: left;
list-style: none!important;
}
.main_con{
width: 100%;
height: 200px;
border: 1px solid #ccc;
line-height: 200px;
text-align: center;
color: blue;
}
</style>

 <template>
 <div>
  <div><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" @click="goAnchor('#anchor-'+index)" v-for="index in 20"> {{index}} </a></div>
  <div :id="'anchor-'+index" class="item" v-for="index in 20">{{index}}</div>
</div>
  </template>
<script>
export default{
data(){
return {
}
},
methods: {
  goAnchor(selector) {
     var anchor = this.$el.querySelector(selector)
     document.documentElement.scrollTop = anchor.offsetTop
  }
 }
}
</script>
<style>
.item{
width: 100%;
height: 200px;
line-height: 200px;
text-align: center;
}
</style>

<template>
<div>
  <div><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" v-anchor="index" v-for="index in 20"> {{index}} </a></div>
  <div :id="'anchor-'+index" class="item" v-for="index in 20" >{{index}}</div>
</div>
</template>
<script>
export default{
data(){
return {
}
}
}
</script>
<style>
.item{
width: 100%;
height: 200px;
line-height: 200px;
text-align: center;
}
</style>

Vue.directive('anchor',{
inserted : function(el,binding){
el.onclick = function(){
  document.documentElement.scrollTop = $('#anchor-'+binding.value).offset().top
}
}
})