elementUI,点击表格展开，刷新的时候也展开点击过的表格。点击箭头，或者表格这一行都可以。

迷南。 2023-06-26 05:55 22阅读 0赞

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyMTQzMTYz_size_16_color_FFFFFF_t_70]

<template>
        <el-table :data="dataList" style="width: 100%" ref="refTable" row-key="id" :expand-row-keys="expands" @row-click="rowClick"
                  @expand-change="expandChange">
            <el-table-column type="expand">
                <template slot-scope="props">
                    <el-form label-position="left" inline class="demo-table-expand">
                        <el-form-item label="商品名称">
                            <span>{ {  props.row.name }}</span>
                        </el-form-item>
                        <el-form-item label="所属店铺">
                            <span>{ {  props.row.shop }}</span>
                        </el-form-item>
                        <el-form-item label="商品 ID">
                            <span>{ {  props.row.id }}</span>
                        </el-form-item>
                        <el-form-item label="店铺 ID">
                            <span>{ {  props.row.shopId }}</span>
                        </el-form-item>
                        <el-form-item label="商品分类">
                            <span>{ {  props.row.category }}</span>
                        </el-form-item>
                        <el-form-item label="店铺地址">
                            <span>{ {  props.row.address }}</span>
                        </el-form-item>
                        <el-form-item label="商品描述">
                            <span>{ {  props.row.desc }}</span>
                        </el-form-item>
                    </el-form>
                </template>
            </el-table-column>
            <el-table-column label="商品 ID" prop="id">
            </el-table-column>
            <el-table-column label="商品名称" prop="name">
            </el-table-column>
            <el-table-column label="描述" prop="desc">
            </el-table-column>
        </el-table>
    </template>
    
    <script>
        export default { 
            data() { 
                return { 
                    dataList: [{ 
                        id: '12987122',
                        name: '好滋好味鸡蛋仔',
                        category: '江浙小吃、小吃零食',
                        desc: '荷兰优质淡奶，奶香浓而不腻',
                        address: '上海市普陀区真北路',
                        shop: '王小虎夫妻店',
                        shopId: '10333'
                    }, { 
                        id: '12987123',
                        name: '好滋好味鸡蛋仔',
                        category: '江浙小吃、小吃零食',
                        desc: '荷兰优质淡奶，奶香浓而不腻',
                        address: '上海市普陀区真北路',
                        shop: '王小虎夫妻店',
                        shopId: '10333'
                    }, { 
                        id: '12987125',
                        name: '好滋好味鸡蛋仔',
                        category: '江浙小吃、小吃零食',
                        desc: '荷兰优质淡奶，奶香浓而不腻',
                        address: '上海市普陀区真北路',
                        shop: '王小虎夫妻店',
                        shopId: '10333'
                    }, { 
                        id: '12987126',
                        name: '好滋好味鸡蛋仔',
                        category: '江浙小吃、小吃零食',
                        desc: '荷兰优质淡奶，奶香浓而不腻',
                        address: '上海市普陀区真北路',
                        shop: '王小虎夫妻店',
                        shopId: '10333'
                    }],
    
                    // 要展开的行，数值的元素是row的key值
                    expands: []
                }
            },
            methods: { 
                //在<table>里，我们已经设置row的key值设置为每行数据id：row-key="id"
                rowClick(row, column) { 
                    //调用table的方法,展开/折叠 行
                    // 展开下拉箭头的展开
                    let open = true;
                    if (this.expands.indexOf(row.id) >= 0) { 
                        open = false;
                    }
                    // 点击这一行进行展开
                    this.$refs.refTable.toggleRowExpansion(row, open);
    
                },
                // 点击下拉按钮的触发函数
                expandChange(row) { 
                    let index = this.expands.indexOf(row.id);
                    if (index < 0) { 
                        this.expands.push(row.id);
                    } else { 
                        this.expands.splice(index, 1);
                    }
                    // 把点击的行的值存在localstorage中，页面刷新时默认展开
                    localStorage.setItem('expands', JSON.stringify(this.expands))
                }
            },
            mounted() { 
                this.expands = localStorage.getItem('expands') ? JSON.parse(localStorage.getItem('expands')) : [];
            }
    
        }
    </script>
    
    <style>
        .demo-table-expand { 
            font-size: 0;
        }
    
        .demo-table-expand label { 
            width: 90px;
            color: #99a9bf;
        }
    
        .demo-table-expand .el-form-item { 
            margin-right: 0;
            margin-bottom: 0;
            width: 50%;
        }
    </style>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyMTQzMTYz_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2019123018233954.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyMTQzMTYz,size_16,color_FFFFFF,t_70