v-for只显示前几个数据，超出显示查看更多

如图

<div v-for="(item,index) in list.slice(0,3)" :key="index">
    <div class="degreeNo" :class="index=='0'?'noOne':index=='1'?'noTwo':index=='2'?'noThree':''">
NO{{index+1}}:
    </div>
    <div class="degreeName">{{item.name}}</div>
</div>
<div class="moreBtn" v-if="list && list.length>3">
    <el-button type="text" @click="checkMore">查看更多</el-button>

</div>