在单元格加载里层的数组的对象的数据
<el-table-column label="正确选项 " prop="optionMessageList">
<!-- correctAnswer -->
<template slot-scope="scope">
<div>
<ul>
<li v-for="item in scope.row.optionMessageList" >
<div v-if="item.correctAnswer == '1' ">{{item.optionName}}</div>
</li>
</ul>
</div>
</template>
</el-table-column>