一、概述
当行内容过多并且不想显示横向滚动条时，可以使用 Table 展开行功能。
官方示例：
test.vue
代码语言：javascript复制<template>
<el-table
:data="tableData"
style="width: 100%">
<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>
<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>
<script>
export default {
data() {
return {
tableData: [{
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'
}]
}
}
}
</script>刷新页面，效果如下：
二、全部展开
增加属性:default-expand-all="true"
test.vue完整代码：
代码语言：javascript复制<template>
<el-table
:data="tableData" :default-expand-all="true"
style="width: 100%">
<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>
<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>
<script>
export default {
data() {
return {
tableData: [{
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'
}]
}
}
}
</script>刷新页面，效果如下：
三、指定某一行默认展示
需要增加属性
:row-key="getRowKeys" :expand-row-keys="expands"
比如：指定第二行，默认展开
test.vue完整代码：
代码语言：javascript复制<template>
<el-table
:data="tableData" :row-key="getRowKeys"
:expand-row-keys="expands"
style="width: 100%">
<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>
<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>
<script>
export default {
data() {
return {
tableData: [{
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'
}],
// 获取row的key值
getRowKeys(row) {
return row.id;
},
// 要展开的行，数值的元素是row的key值
expands: []
}
},
mounted() {
// 在这里你想初始化的时候展开哪一行都可以了
this.expands.push(this.tableData[1].id);
}
}
</script>刷新页面，效果如下：
四、点击某行，默认展开
现有一个需求，展开某行后，再次刷新页面后，默认展开刚才点击的那一行。
需要添加属性 @current-change
这里还使用了localStorage用来存储，点击过的行id。实际生产环境，可以使用vuex来存储点击的id。
test.vue完整代码如下：
代码语言：javascript复制<template>
<el-table
:data="tableData" :row-key="getRowKeys"
:expand-row-keys="expands"
@current-change="toggleRowExpansion"
style="width: 100%">
<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>
<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>
<script>
export default {
data() {
return {
tableData: [{
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'
}],
// 获取row的key值
getRowKeys(row) {
return row.id;
},
// 要展开的行，数值的元素是row的key值
expands: []
}
},
mounted() {
console.log('check_id',localStorage.getItem('check_id'))
// 默认将check_id添加到列表中，用于刷新默认展开指定的行
this.expands.push(localStorage.getItem('check_id'));
},
methods:{
toggleRowExpansion(row){
// console.log("toggleRowExpansion",row)
// 清空数组
this.expands = [];
// 添加指定的id
this.expands.push(row.id);
// 保存点击的id
localStorage.setItem('check_id',row.id)
},
}
}
</script>刷新页面，点击第3行，然后刷新页面，效果如下：
本文参考链接： https://segmentfault.com/q/1010000008981772
