vue.js点击添加class ,之前点击过的class不取消，在已添加的样式点击移除添加的class

Question

<li class="aui-col-xs-6 cell-felx" v-for="(item,index) in money"

        v-if="item.isOpen == 0" @click="selectStyle (item,index) " :class="{'currs':item.currs,'unactive':!item.currs}">
        <img :src= "replace(item.icoUrl)"alt="" class="species-icon">
        <span>{{item.lotteryName}}</span>
    </li>