< tab: line-width=3 active-color="-sharp0094E0" VMI model = "index" >

            <tab-item class="vux-center" :selected="demo === item" v-for="(item, index) in headLine" @click="demo = item" :key="index">
                  {{item}}
            </tab-item>
      </tab>
  <swiper v-model="index" :show-dots="false">
            <swiper-item v-for="(item, index) in headLine" :key="index">
                <div class="tab-swiper vux-center">
                   <!--  {{item}} -->
                      <div id="myChart"></div>
                      <div id="myCharts"></div>
                      <x-button @click.native="goBuild()">XXXX</x-button>
                 </div>
            </swiper-item>
    </swiper> 
    ![][1]