vue警告component lists rendered with v-for should have explicit keys

处理方案：

加上 :key="index"

<el-badge
      :value=""
      v-for="(item, index) in tabs"
      class="yh-tab-button"
      :class="{'yh-badge-check':,
	  'yh-badge-char':,
	  }"
	  :key="index"
    >
<el-badge>