vue实现el-table-column中自定义label
javascript
<el-table-column
label="操作"
align="left"
width="50"
>
<template #header>
<div>
<el-button
size="mini"
type="primary"
icon="el-icon-plus"
circle
></el-button>
</div>
</template>
</el-table-column>
