问题:给el-table设置个高度,高度为500px,之后就添加如下4条数据,那么底部就没数据,直接就空白了,本文章就是为了解决这个问题,如果底部留白那么就添加几条空数据就行了.如果数据已达到高度了那么就不会留白了
1.效果
这个空列可以根据高度来决定添加几个空格子去铺满列表，解决列表留白问题
2.主要代码讲解
2.1为了不影响原始数据,建议在获取到接口列表数据后存入到俩个变量中,一个作为展示一个作为判断添加几行空数据,
javascript
addTable() {
// 这边就是调用列表的接口之后数据展示
this.tableData = [
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普'
},
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
}
];
this.tableDataFilter = [
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普'
},
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
}
];
this.$nextTick(() => {
this.handleTableResize();
});
}2.2监听页面高度发生变化后，需要判断展示几行空数据。
javascript
window.addEventListener('resize', this.handleTableResize); // 监听页面尺寸变化2.3给每行设置固定的高度,必须要固定死,不然就判断失误了，如果内容过多可以设置show-overflow-tooltip
css
.el-table /deep/ .el-table__row {
height: 50px;
}2.4 关键代码
设置个tableHeight：初始值为0
整个表格的高度，给el-table绑定一个ref，名字叫algorithmRef
javascript
this.$refs.algorithmRef.$el.clientHeight整个表格还剩下的留白的高度，这个-100是减去表头，-50是上面设置的一行的高度之后，50 * this.tableDataFilter.lengt，这个就是有数据的行高度，最后得出表格剩下留白高度
javascript
height = this.tableHeight - 100 - 50 * this.tableDataFilter.length;result：要添加几行空白给表格数据
最后把空数据添加到tableData中
javascript
getTableHeight() {
this.tableHeight = this.$refs.algorithmRef.$el.clientHeight;
let height = 0;
height = this.tableHeight - 100 - 50 * this.tableDataFilter.length;
const result = Math.floor(height / 50);
this.tableAdd(result);
console.log(result, '要传给tableAdd的值');
},
tableAdd(num) {
let addTable = [];
for (let i = 0; i < num; i++) {
addTable.push({ date: '', name: '', address: '' });
}
this.tableData = [...this.tableDataFilter, ...addTable];
},3.完整代码
javascript
<!--
* @Descripttion: el-table解决数据过少小于高度有留白的问题
* @version:
* @Author: 请叫我欧皇i
* @email: 13071200550@163.com
* @Date: 2023-11-13
-->
<template>
<div class="container-table" ref="paramRef">
<el-button @click="addTable()">添加</el-button>
<div class="table-box">
<el-table
border
:cell-style="{ borderColor: '#C0C0C0' }"
:header-cell-style="{ borderColor: '#c0c0c0' }"
:data="tableData"
stripe
height="100%"
@resize="handleTableResize"
style="width: 100%"
ref="algorithmRef"
class="tablebox"
>
<el-table-column show-overflow-tooltip label="自动数据" align="center">
<el-table-column prop="date" label="日期" width="180"> </el-table-column>
<el-table-column prop="name" label="姓名" width="180"> </el-table-column>
</el-table-column>
<el-table-column label="人工数据" align="center">
<el-table-column prop="address" label="地址"> </el-table-column>
<el-table-column prop="date" label="日期" width="180"> </el-table-column>
<el-table-column prop="name" label="姓名" width="180"> </el-table-column>
</el-table-column>
</el-table>
</div>
</div>
</template>
<script>
export default {
data() {
return {
tableData: [],
tableDataFilter: [],
tableHeight: 0 // 行高
};
},
mounted() {
// setTimeout(() => {
// }, 1000);
this.$nextTick(() => {
this.getTableHeight(); // 监听el-table尺寸变化事件，重新获取表格高度
window.addEventListener('resize', this.handleTableResize); // 监听页面尺寸变化
});
},
methods: {
handleTableResize() {
this.$nextTick(() => {
this.getTableHeight(); // 监听el-table尺寸变化事件，重新获取表格高度
});
// this.tableHeight = this.$refs.dynamicTable.$el.clientHeight;
// console.log();
},
getTableHeight() {
this.tableHeight = this.$refs.algorithmRef.$el.clientHeight;
let height = 0;
// 留白的高度
height = this.tableHeight - 100 - 50 * this.tableDataFilter.length;
const result = Math.floor(height / 50);
this.tableAdd(result);
console.log(result, '要传给tableAdd的值');
},
tableAdd(num) {
let addTable = [];
for (let i = 0; i < num; i++) {
addTable.push({ date: '', name: '', address: '' });
}
this.tableData = [...this.tableDataFilter, ...addTable];
},
handlePageResize() {
this.$nextTick(() => {
this.getTableHeight(); // 页面尺寸变化后重新获取表格高度
});
},
addTable() {
// 这边就是调用列表的接口之后数据展示
this.tableData = [
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普'
},
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
},
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普'
}
];
this.tableDataFilter = [
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普'
},
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
},
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普'
}
];
this.$nextTick(() => {
this.handleTableResize();
});
}
}
};
</script>
<style lang="scss" scoped>
.container-table {
height: 70vh;
width: 890px;
background-color: #fff;
.table-box {
height: 70%;
width: 100%;
}
}
::v-deep .el-table .el-table__body--striped .el-table__row:nth-child(even) {
background-color: #f7f7f7; /* 设置偶数行的背景色 */
}
.tablebox {
border: 1px solid #c0c0c0;
}
/deep/ .el-table::after {
width: 0;
}
/deep/ .el-table::before {
height: 0;
}
// 这是关键,设置表格的每一行的高度,必须要固定死,如果内容过多可以设置show-overflow-tooltip
.el-table /deep/ .el-table__row {
height: 50px;
}
/deep/ .el-table tbody tr td:nth-child(5),
/deep/ .el-table thead tr th:nth-child(5) {
border-right: none;
}
/deep/ table thead tr:first-of-type th:nth-child(2) {
border-right: none;
}
</style>