analyze:
- First of all, we need to achieve the effect of the above picture, and then there is no el-select in Element-UI, so we need to write it ourselves
- We need to use
el-popover
the component, and then use itv-model="visible"
to realize the control display - we're here
el-popover
toslot="reference"
put oneel-select
- Use
popper-append-to-body="false"
does not need to insert floating elements - Use
popper-class="hide-popper"
the definition floating window class ashide-popper
, and set , so that the drop-down option
display:none
that will not exist is selectedel-select
el-option
Loop through the elements in the list selected below, so that you canel-select
display the selected and deleteel-select
Two-way binding is an array of custom choices
- Use
- html:
<template> <div class="arrbox"> <!-- 通过visible控制显示还是隐藏 --> <el-popover v-model="visible" placement="bottom-start" width="auto" > <div slot="reference" class="check-select"> <!-- popper-append-to-body:不需要插入浮动元素,popper-class:设置类名并隐藏 --> <el-select ref="select" v-model="currentval" :style="{width:`${width}px`,height:`${height}`}" multiple :placeholder="placeholder" :popper-append-to-body="false" popper-class="hide-popper" style="width:100%" @visible-change="visibleChange" @focus="getFocus" > <el-option v-for="item in selectItem" :key="`${item.value}_k`" :label="item.label" :value="item.value" /></el-select> </div> <!-- selectBxClick让select强制选中 --> <div class="selectMain" :style="{'min-width':`${width-20}px`}" @click="selectBxClick"> <div class="seachButton"> <el-select v-model="seachValue" placeholder=" 请选择筛选" style="width:70%;margin-right:10px;max-width:195px" @visible-change="selectBxClick()" > <el-option v-for="item in seachList" :key="item.value" :value="item.value" :label="item.label" /> </el-select> <div class="btn" @click="seachBtn">搜索</div> </div> <div class="selectDiv"> <div v-for="item in list.filter(n=>n.value=='all')" :key="item.value" class="list" :class="[currentval.indexOf(item.value)!=-1?'selected':'',item.value=='all'?'allCheck':'']" @click="clickItem(item)">{ { item.label }}</div> <div class="selectDivAuto"> <div v-for="item in list.filter(n=>n.value!='all')" :key="item.value" class="list" :class="[currentval.indexOf(item.value)!=-1?'selected':'',item.value=='all'?'allCheck':'']" @click="clickItem(item)">{ { item.label }}</div> </div> </div> </div> </el-popover> </div> </template>
- js:
-
Use
getFocus
to get whether it is focused or not, and let it be focusedvisible=true
, so that a custom drop-down selection can be displayed -
Control the display by
visibleChange
implementing monitoringel-select
el-popover
-
When clicking on the custom drop-down selection, the arrow will always be up by
@click="selectBxClick"
keeping the focusel-select
-
Pass
@click="seachBtn"
andgetList
get the list, you need to customize it yourself// 模拟获取的数据 const seachClickList = [{ value: '1',label: '测试1',type: '1'},{ value: '2',label: '测试2',type: '1'},{ value: '3',label: '测试3',type: '1'},{ value: '4',label: '测试4',type: '2'},{ value: '5',label: '测试5',type: '2'},{ value: '6',label: '测试6',type: '2'},{ value: '7',label: '测试7',type: '2'}] export default { model: { prop: 'parentArr', event: 'change-parentArr' }, props: { parentArr: { type: Array, default() { return [] } }, // 传入选中的item,主要时防止list里面没有选中的数据 parentSelectItem: { type: Array, default() { return [] } }, width: { type: Number, default: 300 }, height: { type: Number, default: 30 }, placeholder: { type: String, default: '请输入' } }, data() { return { seachList: [ { value: '1', label: '条件一' }, { value: '2', label: '条件二' } ], visible: false, currentval: [], list: [], selectItem: [], seachValue: '1' } }, watch: { seachValue: { handler(value) { this.getList(value) }, deep: true, immediate: true }, parentArr: { handler(value) { this.currentval = value }, deep: true, immediate: true }, parentSelectItem: { handler(value) { this.selectItem = value.map(n => { if (n.value == 'all') { n.label = '全部' } return n }) }, deep: true, immediate: true }, currentval: { handler(value) { this.$emit('change-parentArr', value) } } }, created() { }, methods: { getList(value) { this.list = [{ label: '全部', value: 'all' }, ...seachClickList.filter(n => n.type == value)] this.getSelectItem() }, // 获取选中的item getSelectItem() { const noItemList = this.currentval.map(n => { if (this.selectItem.findIndex(i => i.value == n) == -1) { return n } return null }).filter(n => n != null) noItemList.forEach(item => { const index = this.list.findIndex(i => i.value == item) if (index != -1) { this.selectItem.push(this.list[index]) } }) }, getFocus() { this.visible = true }, visibleChange(data) { this.visible = data }, selectBxClick() { // 避免点击框体时组件消失 this.$refs.select.visible = true }, // 选择 clickItem(item) { const index = this.currentval.indexOf(item.value) if (index == -1) { if (item.value == 'all') { this.currentval = ['all'] this.selectItem = [{ label: '全部', value: 'all' }] } else { this.currentval.push(item.value) this.selectItem.push(item) const currentvalIndex = this.currentval.indexOf('all') const selectItemIndex = this.selectItem.findIndex(n => n.value == 'all') if (currentvalIndex != -1 && selectItemIndex != -1) { this.selectItem.splice(selectItemIndex, 1) this.currentval.splice(currentvalIndex, 1) } } } else { const itemIndex = this.selectItem.findIndex(n => n.value == item.value) this.selectItem.splice(itemIndex, 1) this.currentval.splice(index, 1) } }, // 搜索 seachBtn() { this.getList() } } }
-
css:
selected
The style used by the attributeel-select
, so that the appearance is as consistent as possible
.arrbox { display: inline-block; } .check-select{ ::v-deep.hide-popper{ display: none; } } ::v-deep .el-input__suffix{ i:not(.el-select__caret){ display: none; } } .selectMain { width: 100%; height: 100%; .seachButton{ width: 100%; align-items: center; display: flex; div.btn{ width: 25%; max-width: 70px; max-width: 80px; height: 40px; display: flex; align-items: center; justify-content: center; font-size: 12px; color: #fff; background-color: #409EFF; border-radius: 5px; cursor: pointer; } } .selectDiv{ width: 100%; max-width: 500px; margin-top: 10px; padding: 0 10px 0 0; .list{ width: 100%; padding: 10px 20px 10px 10px; color: #666; cursor: pointer; position: relative; &.selected{ color: #409EFF; &::after{ position: absolute; right: 0px; top: 50%; transform: translateY(-50%); font-family: element-icons; content: "\e6da"; font-size: 12px; font-weight: 700; -webkit-font-smoothing: antialiased; } } } .selectDivAuto{ width: calc(100% + 15px); max-height: 300px; overflow-y: auto; .list{ padding: 10px 30px 10px 10px; &.selected::after{ right: 10px; } } } } } .allCheck{ border-bottom: 1px solid rgb(228, 225, 225); }
-
use
<template> <seachSelectInput v-model="from.tag" :parentSelectItem='selectItem' :width="302" placeholder="请选择标签" /> </template> <script> import seachSelectInput from ./seachSelectInput' export default { components: { seachSelectInput }, data(){ return{ from:{ tag:['1'] }, selectItem:[ { value: '1', label: '测试1' } ] } } }