关于better-scroll插件的问题

Question

<template>
  <div ref="slider">
    <div ref="sliderGroup">
      <slot>
      </slot>
    </div>
    <div>
      <span v-for="(item,index) in dots" :class="{active:currentPageIndex === index}"></span>
    </div>
  </div>
</template>

<script type="text/ecmascript-6">
import BScroll from 'better-scroll'
import {addClass} from 'common/js/dom'
  export default {
    data() {
      return {
        dots: [],
        currentPageIndex: 0
      }
    },
    props: {
      loop: {
        type: Boolean,
        default: true
      },
      autoPlay: {
        type: Boolean,
        default: true
      },
      interval: {
        type: Number,
        default: 4000
      }
    },
    mounted: function() {
      setTimeout(() => {
        this._getSliderWidth()
        this._initDots()
        this._initSlider()
      },20)
    },
    methods: {
      _getSliderWidth() {
        this.children = this.$refs.sliderGroup.children
        let width = 0
        let sliderWidth = this.$refs.slider.clientWidth
        for(let i=0; i<this.children.length; i++){
          let child = this.children[i]
          addClass(child,'slider-item')
          child.style.width = sliderWidth + 'px'
          width += sliderWidth
        }
        // better-scroll在初始化的过程中如果this.loop为true的话，会左右各克隆一个DOM，所以需要加两个sliderWidth
        if(this.loop){
          width += 2*sliderWidth
        }
        this.$refs.sliderGroup.style.width = width + 'px'
      },
      _initDots(){
        this.dots = new Array(this.children.length)
      },
      _initSlider() {
        this.slider = new BScroll(this.$refs.slider, {
          scrollX: true,
          scrollY: false,
          momentum: false,
          snap: true,
         

     snapLoop: this.loop,
   snapThreshold: 0.3,
    snapSpeed: 400,

          click: true
        })
        this.slider.on('scrollEnd',()=>{
          let pageIndex = this.slider.getCurrentPage().pageX
          if(this.loop){
            pageIndex -= 1
          }
          this.currentPageIndex = pageIndex
        })
      }
    }
  }
</script>

<style scoped rel="stylesheet/stylus">
  @import "~common/stylus/variable"

  .slider
    min-height: 1px
    .slider-group
      position: relative
      overflow: hidden
      white-space: nowrap
      .slider-item
        float: left
        box-sizing: border-box
        overflow: hidden
        text-align: center
        a
          display: block
          width: 100%
          overflow: hidden
          text-decoration: none
        img
          display: block
          width: 100%
    .dots
      position: absolute
      right: 0
      left: 0
      bottom: 12px
      text-align: center
      font-size: 0
      .dot
        display: inline-block
        margin: 0 4px
        width: 8px
        height: 8px
        border-radius: 50%
        background: $color-text-l
        &.active
          width: 20px
          border-radius: 5px
          background: $color-text-ll
</style>

有背景标注的地方在页面中不起作用，不知道什么原因，求教

Answer 1

解决了，就是在使用snap的时候，不可以单独引用snapLoop: this.loop,  snapThreshold: 0.3,  snapSpeed: 400，而应该将它们作为一个对象放在snap中