toggleRowExpansion实现表格的展开和收起功能（Element的table组件，展开行 type=“expand“ ）

　　　　　　

 

 

 

 

　　　　　　<div v-if="scope.row.isExpend == 'father'">

                            <el-button size="small" @click="handleConnectionSearch(scope.row)">    {{scope.row.expanded?'收起':'展开'}}  

                            </el-button>

                        </div>

 

　　handleConnectionSearch(row) {

            row.expanded = !row.expanded;

            this.$refs.topicTable.toggleRowExpansion(row, row.expanded) // 点击button展开

        },