vue-点击添加class 其他标签删除class

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class && style 用法

 <div id="app">
     <grid :cols="2" style="margin: 0 -1px -1px;">
         <grid-item class="reset-p" :class="{active: i == active}"
                       v-for="(item,i) in lines" :key="i"
                       @on-item-click="onLinesClick(item, i)">
            <div slot="label">
              <span class="radius-bg"
                  :style="{ backgroundColor:[item.color] }">
                <i class="iconfont icon-huopinfenliu"></i>
              </span>
              <span>{{item.name}}</span>
           </div>
        </grid-item>
     </grid>
  </div>


 export default{
        data () {
            return {
                active: 0
            }
        },
        methods: {
            onLinesClick(item, i) {
                this.active = i;
            }
        }
    }