表格＜template slot-scope=“scope“＞

<div>
      <el-table :data="tableData" stripe style="width: 100%">
        <el-table-column prop="username" label="用户名" width></el-table-column>
        <el-table-column prop="email" label="邮箱" width></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column prop="mg_state" label="状态">
          <template slot-scope="scope">//想获取tableData就要用template
            <el-switch
              v-model="scope.row.mg_state"
              active-color="#13ce66"
              inactive-color="#ff4949"
              @change="changeState"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column prop="address" label="操作"></el-table-column>
      </el-table>
    </div>