Vue uniapp realizes the segmenter effect

<view class="countTime">
 <text class="title">Discounts and dining hours</text>
 <view class="wrap">
  <view class="box" v-for="(item,index) in discountList" :key="index" @click="toggleItem(index)">
   <view class="selBox" :style="[itemStyle(index)]">
    <view class="countBox">
     <text class="count">{{item.count}}</text>
     <text>Fold</text>
       </view>
    <text class="time">{{item.time}}</text>
   </view> 
   <text class="countPrice" :style="[priceStyle(index)]">After discount, average price per person is ￥100</text>
  </view>
 </view>
</view>

export default {
  data() {
   return {
    themColor:this.Enum.Them.base,
    discountList:[{
     "count":6.9,
     "time":"12:00~13:00"
    },{
     "count":6.7,
     "time":"14:00~16:00"
    },{
     "count":6.5,
     "time":"20:00~22:00"
    }],
    currentIndex:0
   }
  },
  computed:{
   itemStyle(){
    return index => {
     let style = {}
     if(index === this.currentIndex){
      style.backgroundColor = this.themColor;
      style.border = `1px solid ${this.themColor}`;
      style.color = '#fff';
     }
     //When the second one is selected, the first right border and the third left border are set to none
     if(this.currentIndex === 1){
      if(index === this.currentIndex - 1){
       style.borderRight = 'none !important'
      }
      if(index === this.currentIndex + 1){
       style.borderLeft = 'none !important'
      }
     }
     return style
    }
   },
   priceStyle(){
    return index => {
     let style = {}
     if(index === this.currentIndex){
      style.color = this.themColor
     }
     return style
    }
   }
  },
  methods: {
   toggleItem(idx){
    this.currentIndex = idx
   }
  }
 }

.countTime{
  display: flex;
  flex-direction: column;
  .title{
   font-size: $uni-font-size-bl;
   margin: 20rpx 0;
  }
  .wrap{
   display: flex;
   .box{
    @include flex(column,center,center);
    width: 33%;
    &:nth-child(2){
     & > .selBox{
      border-left: none;
      border-right: none;
     }
    }
    .selBox{
     @include flex(column,center,center);
     width: 100%;
     height: 150rpx;
     border: 1px solid $uni-border-color;
     .countBox{
      font-size: $uni-font-size-lg;
      font-weight: bold;
      margin-bottom: 10rpx;
      .count{
       font-size: $uni-font-size-bl;
      }
     }
     .time{
      font-size: $uni-font-size-l;
     }
    }
    .countPrice{
     margin-top: 10rpx;
     font-size: $uni-font-size-l;
    }
   }
  }
 }