Introduction to encapsulation of Vue2.0 multi-Tab switching component

<TabItems>
  <p name="买入" class="first">
    <Content :isContTab = "0" />
  </p>
  <p name="自动再平衡" class="second">
    <Content :isContTab = "1" />
  </p>
  <p name="一键卖出" class="three">
    <Content :isContTab = "2" />
  </p>
</TabItems>

body,html {margin: 0;}

* {
  opacity: 1;
  -webkit-backface-visibility: hidden;
}

.tabItems {
  .Tab_tittle_wrap {
    position: absolute;
    width: 100%;
    top: 0;
    z-index: 2;
    background: @ffffff;
    display: -webkit-box;
    height: 80px;
    line-height: 80px;
    text-align: center;
    color: @222222;
    border-bottom: 1px solid rgba(46, 177, 255, 0.08);
    box-shadow: 0px 0px 25px 6px rgba(46, 177, 255, 0.21);
    span {
      display: block;
      text-align: center;
      width: 26%;
      margin: 0 24px;
      font-size: 26px;
      position: relative;
      i {
        display: inline-block;
        position: absolute;
        width: 1px;
        height: 50px;
        top: 15px;
        right: -24px;
        background: @dddddd;
      }
      &:last-child {
        i {
          display: none;
        }
      }
    }
    .router-link-active {
      color: #8097f9;
      border-bottom: 1px solid #8097f9;
    }
  }
  .Tab_item_wrap {
    position: absolute;
    top: 82px;
    width: 100%;
    z-index: 0;
    background: @ffffff;
    bottom: 0;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
  }
  .showAnminous {
    opacity: 1;
    -webkit-backface-visibility: hidden;
    -webkit-animation-name: "rightMove";
    /*动画名称，需要跟@keyframes定义的名称一致*/
    -webkit-animation-duration: .3s;
    /*动画持续的时间长*/
    -webkit-animation-iteration-count: 1;
    /*动画循环播放的次数为1 infinite为无限次*/
  }
}

@-webkit-keyframes rightMove {
  0% {
    -webkit-transform: translate(110%, 0);
  }
  100% {
    -webkit-transform: translate(0, 0);
  }
}

@-ms-keyframes rightMove {
  0% {
    -ms-transform: translate(110%, 0);
  }
  100% {
    -ms-transform: translate(0, 0);
  }
}

@keyframes rightMove {
  0% {
    -webkit-transform: translate(110%, 0);
    -ms-transform: translate(110%, 0);
    transform: translate(110%, 0);
  }
  100% {
    -webkit-transform: translate(0, 0);
    -ms-transform: translate(0, 0);
    transform: translate(0, 0);
  }
}

<template>
  <p class="tabItems">
    <p class="Tab_tittle_wrap" @click="tabswitch">
      <span v-for="(v,i) in tabTitle" :style="{width:(100/tabTitle.length-7.5)+&#39;%&#39;}" :class="isShowTab==i?&#39;router-link-active&#39;:&#39;&#39;">{{v}}<i></i></span>
    </p>
    <p class="Tab_item_wrap">
      <slot></slot>
    </p>
  </p>
</template>

<style lang="less">
  @import "./less/index";
</style>
<script>
  export default {
    data() {
      return {
        tabTitle: [],
        isShowTab: 0,
      }
    },
    created: function() {
      let is = sessionStorage.getItem("isTabShow");
      if(is) {
        this.isShowTab = is;
      } else {
        let URL = libUtils.GetURLParamObj();
        this.isShowTab = URL.isShowTab ? URL.isShowTab : "0";
      }

      setTimeout(function() {
        this.tabswitch(document.querySelector(".Tab_tittle_wrap").children[this.isShowTab].click());
      }.bind(this), 0);
    },
    mounted() {
      let slot = this.$slots.default;
      for(let i = 0; i < slot.length; i++) {
        if(slot[i].tag == "p") {
          this.tabTitle.push(slot[i].data.attrs.name);
          if(slot[i].elm) {
            slot[i].elm.className = "hide";
            if(this.isShowTab == i) {
              slot[i].elm.className = "";
            }
          };
        }
      }
    },
    methods: {
      tabswitch() {
        if(!event) return;
        let target = event.target;

        if(target.nodeName.toLowerCase() !== &#39;span&#39;) {
          return;
        }

        let len = target.parentNode.children;
        for(let i = 0; i < len.length; i++) {
          len[i].index = i;
          len[i].removeAttribute(&#39;class&#39;);
        }
        target.setAttribute(&#39;class&#39;, &#39;router-link-active&#39;);
        this.isShowTab = target.index;

        //tabItems
        let child = this.$el.children[1].children;
        for(let k = 0; k < child.length; k++) {
          child[k].className = "hide";
          if(k == target.index) {
            child[k].className = "showAnminous";
          }
        }
        try {
          sessionStorage.setItem("isTabShow", target.index);
        } catch(err) {
          console.log(err);
        }
      }
    }
  }
</script>