需求：
表格数据过多的时候，需要实现动态选择数据的功能，有俩种方法可以按需选择，解决了表格动态选择时闪屏数据抖动问题。
注意，这个添加数据是tableData原本就有的，我做的这个操作类似就是折叠选择展示原有的数据
1.实现表格数据居中
2.动态添加内容
3.解决表格添加数据后闪屏功能
4.解决了el-dropdown-menu点击后自动关闭问题
1.效果1
使用了el-dropdown嵌套el-checkbox-group实现
2.效果2
使用了el-select的多选实现
3.主要代码讲解
:hide-on-click="false"：点击菜单后不隐藏菜单
<el-dropdown :hide-on-click="false">
<span class="el-dropdown-link"> 地址<i class="el-icon-arrow-down el-icon--right"></i> </span>
<el-dropdown-menu slot="dropdown">
<el-dropdown-item>
<el-checkbox-group
style="display: flex; flex-direction: column"
v-model="checkList"
@change="selectOptions"
>
<el-checkbox :label="item.label" v-for="item in options" :key="item.value"></el-checkbox>
</el-checkbox-group>
</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>3.1:添加数据后窗口抖动解决代码
1.在el-table添加ref='table'
2.每次数据加载完重新渲染表格
beforeUpdate() {
this.$nextTick(() => {
//在数据加载完，重新渲染表格
this.$refs['table'].doLayout();
});
}3.2 数据筛选
根据选择值进行数据筛选，之后再和原有数据进行比对，最后把数据添加到表格数据中实现
selectOptions(val) {
console.log(val, '数据');
this.tableFilter = [];
let filter = this.options.filter((item) => val.includes(item.label));
// let filter = this.options.filter((item) => val.includes(item.value));
console.log(filter, '多选数据');
filter.forEach((item) => {
this.tableFilter.push({
prop: item.value,
label: item.label
});
});
}4.效果1完整代码
<template>
<div class="content-box">
<div class="container">
<h3>测试</h3>
<el-table
ref="table"
:data="tableData"
style="width: 100%"
:header-cell-style="{ 'text-align': 'center' }"
:cell-style="{ 'text-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 width="250" prop="address">
<template slot="header" slot-scope="scope">
<el-dropdown :hide-on-click="false">
<span class="el-dropdown-link"> 地址<i class="el-icon-arrow-down el-icon--right"></i> </span>
<el-dropdown-menu slot="dropdown">
<el-dropdown-item>
<el-checkbox-group
style="display: flex; flex-direction: column"
v-model="checkList"
@change="selectOptions"
>
<el-checkbox :label="item.label" v-for="item in options" :key="item.value"></el-checkbox>
</el-checkbox-group>
</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>
</template>
</el-table-column>
<el-table-column
v-for="(header, index) in tableFilter"
:key="header.prop"
:prop="header.prop"
:label="header.label"
width="120px"
></el-table-column>
</el-table>
</div>
</div>
</template>
<script>
export default {
data() {
return {
checkList: [],
tableData: [
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀区金沙江路 1518 弄',
age: 19,
sex: '男'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普陀区金沙江路 1517 弄',
age: 17,
sex: '女'
},
{
date: '2016-05-01',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄',
age: 20,
sex: '男'
},
{
date: '2016-05-03',
name: '王小虎',
address: '上海市普陀区金沙江路 1516 弄',
age: 20,
sex: '女'
}
],
options: [
{
value: 'age',
label: '年龄'
},
{
value: 'sex',
label: '女'
}
],
value1: [],
value2: [],
tableFilter: []
};
},
methods: {
// 查询
selectOptions(val) {
console.log(val, '数据');
this.tableFilter = [];
let filter = this.options.filter((item) => val.includes(item.label));
// let filter = this.options.filter((item) => val.includes(item.value));
console.log(filter, '多选数据');
filter.forEach((item) => {
this.tableFilter.push({
prop: item.value,
label: item.label
});
});
}
},
beforeUpdate() {
this.$nextTick(() => {
//在数据加载完，重新渲染表格
this.$refs['table'].doLayout();
});
}
};
</script>
<style lang="scss" scoped>
.box {
display: flex;
width: 500px;
height: 500px;
border: 1px solid red;
.box_left {
background-color: #ddd;
}
}
</style>
5.效果2完整代码
<template>
<div class="content-box">
<div class="container">
<h3>测试</h3>
<el-table
ref="table"
:data="tableData"
style="width: 100%"
:header-cell-style="{ 'text-align': 'center' }"
:cell-style="{ 'text-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 width="250" prop="address">
<template slot="header" slot-scope="scope">
<div style="display: flex; align-items: center">
<div style="width: 60px">地址</div>
<el-select
v-model="value2"
multiple
collapse-tags
style="margin-left: 20px"
@change="selectOptions"
placeholder="请选择"
>
<el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value"> </el-option>
</el-select>
</div>
</template>
</el-table-column>
<el-table-column
v-for="(header, index) in tableFilter"
:key="header.prop"
:prop="header.prop"
:label="header.label"
width="120px"
></el-table-column>
</el-table>
</div>
</div>
</template>
<script>
export default {
data() {
return {
checkList: [],
tableData: [
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀区金沙江路 1518 弄',
age: 19,
sex: '男'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普陀区金沙江路 1517 弄',
age: 17,
sex: '女'
},
{
date: '2016-05-01',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄',
age: 20,
sex: '男'
},
{
date: '2016-05-03',
name: '王小虎',
address: '上海市普陀区金沙江路 1516 弄',
age: 20,
sex: '女'
}
],
options: [
{
value: 'age',
label: '年龄'
},
{
value: 'sex',
label: '女'
}
],
value1: [],
value2: [],
tableFilter: []
};
},
methods: {
// 查询
selectOptions(val) {
console.log(val, '数据');
this.tableFilter = [];
let filter = this.options.filter((item) => val.includes(item.value));
console.log(filter, '多选数据');
filter.forEach((item) => {
this.tableFilter.push({
prop: item.value,
label: item.label
});
});
}
},
beforeUpdate() {
this.$nextTick(() => {
//在数据加载完，重新渲染表格
this.$refs['table'].doLayout();
});
}
};
</script>
<style lang="scss" scoped>
.box {
display: flex;
width: 500px;
height: 500px;
border: 1px solid red;
.box_left {
background-color: #ddd;
}
}
</style>
