我的 router-link-active 有问题

不好意思 找到问题了 

 <router-link class="g-tabbar-item" to="/home">   to 没有改到相应的类名 

<div class="g-tabbar">
    <router-link class="g-tabbar-item" to="/home">
      <i class="iconfont icon-home"></i>
      <span>首页</span>
    </router-link>
    <router-link class="g-tabbar-item" to="/category">
      <i class="iconfont icon-category"></i>
      <span>分类</span>
    </router-link>
    <router-link class="g-tabbar-item" to="/cart">
      <i class="iconfont icon-cart"></i>
      <span>购物车</span>
    </router-link>
    <router-link class="g-tabbar-item" to="/personal">
      <i class="iconfont icon-personal"></i>
      <span>我的</span>
    </router-link>
  </div>