表格數據刪除數據後局部刷新的方法

<!-- 角色列表區域 -->
      <el-table :data="rolelist"
                border
                stripe>
        <!-- 展開列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['vcenter','bdbottom',i1===0?'bdtop':'']"
                    v-for="(item1,i1) in scope.row.children"
                    :key="item1.id">
              <!-- 渲染一級權限 -->
              <el-col :span="5">
                <el-tag closable
                        @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二級和三級權限 -->
              <el-col :span="19">
                <!-- 通過for循環嵌套渲染二級權限 -->
                <el-row :class="['vcenter',i2!==0?'bdtop':'']"
                        v-for="(item2,i2) in item1.children"
                        :key="item2.id">
                  <el-col :span="6">
                    <el-tag closable
                            @close="removeRightById(scope.row,item2.id)"
                            type="success">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning"
                            closable
                            @close="removeRightById(scope.row,item3.id)"
                            v-for="item3 in item2.children"
                            :key="item3.id">
                      {{item3.authName}}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>{{scope.row.children}}</pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index">
        </el-table-column>
        <el-table-column label="角色名稱"
                         prop="roleName">
        </el-table-column>
        <el-table-column label="角色描述"
                         prop="roleDesc">
        </el-table-column>
        <el-table-column label="操作"
                         width="300px">
          <template slot-scope="scope">
            <el-button type="primary"
                       icon="el-icon-edit"
                       size="mini"
                       @click="editRole(scope.row)">編輯</el-button>
            <el-button type="danger"
                       icon="el-icon-delete"
                       size="mini">刪除</el-button>
            <el-button type="warning"
                       icon="el-icon-setting"
                       size="mini">分配權限</el-button>
          </template>
        </el-table-column>
      </el-table>
<script>
 methods: {
    // 刪除權限
    async removeRightById (role, rightId) {
      const confirmResult = await this.$confirm('此操作將永久刪除該文件, 是否繼續?', '提示', {
        confirmButtonText: '確定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了刪除！')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('刪除權限失敗！')
      }
      // this.getRolesList()
      // 對象是引用數據類型，是引用地址，所以可以改變數據
      role.children = res.data
    }
}
</script>