前言
最近产品提出一个排序需求，希望能进行拖拽排序，我一想，vue2插件这么多，sortable.js、draggable分分钟实现了，但是还有一个需求希望能够实现多选拖拽，这个就有点麻烦，查询了许多资料，暂时没有发现能够多选的拖拽组件，如果自己写一个，既耗费时间，实现效果上必然没有draggable这种成熟轮子效果好，于是决定基于draggable做改进。
实现思路
我们知道draggable插件只要设置相同的group名字就能实现分组拖拽，如果我们渲染两个同名分组，控制第二个分组的显示与隐藏，鱼目混珠，就能实现简单的多选拖拽效果
1.通过group="task"设置两个同名分组，同时利用draggable=".card"属性，控制class名称，禁止单选
<draggable group="task" v-model="dataList" @end="draggerEnd" class=""
:class="show ? 'order-box-show' : 'order-box'" animation="300" draggable=".card">
<transition-group>
<div v-for="(item, index) in dataList" :key="index" class="box" @click="handleSelect(index)"
:class="item.select || show ? 'card' : ''">{{ item.name }}
</div>
</transition-group>
</draggable>
<div class="position" v-show="show">
<draggable group="task" v-model="dataList2" @end="draggerEnd" class="order-box" animation="300">
<transition-group>
<div v-for="(item, index) in dataList2" :key="index" class="boxs">
<div>
{{ item.name }}
</div>
</div>
</transition-group>
</draggable>2.通过v-show="show"控制第二个分组的隐藏与展示，同时对数据做处理，并且在拖拽结束后，要在分组一中找到分组二拖拽过来的初始元素删掉
const findIndex = this.dataList.findIndex((item => item.name === '选中元素展示区'))
this.dataList.splice(findIndex, 1)Demo全部代码
<template>
<div>
<div>
<draggable group="task" v-model="dataList" @end="draggerEnd" class=""
:class="show ? 'order-box-show' : 'order-box'" animation="300" draggable=".card">
<transition-group>
<div v-for="(item, index) in dataList" :key="index" class="box" @click="handleSelect(index)"
:class="item.select || show ? 'card' : ''">{{ item.name }}
</div>
</transition-group>
</draggable>
<div class="position" v-show="show">
<draggable group="task" v-model="dataList2" @end="draggerEnd" class="order-box" animation="300">
<transition-group>
<div v-for="(item, index) in dataList2" :key="index" class="boxs">
<div>
{{ item.name }}
</div>
</div>
</transition-group>
</draggable>
</div>
</div>
<el-button style="marginLeft:50px" @click="handleStart">确认</el-button>
</div>
</template>
<script>
import draggable from 'vuedraggable'
export default {
components: {
draggable
},
data() {
return {
dataList: [
],
dataList2: [{ name: '选中元素展示区' }],
show: false,
selectArr: [],
}
},
mounted() {
for (var i = 0; i < 60; i++) {
this.dataList.push({ name: i, select: false })
}
},
methods: {
handleSelect(index) {
const data = JSON.parse(JSON.stringify(this.dataList))
data[index].select = true
this.selectArr.push({ ...data[index] })
this.dataList = JSON.parse(JSON.stringify(data))
},
handleStart(e) {
if (!this.selectArr.length) {
return
}
this.show = true
this.selectArr.forEach((item, index) => {
const Index = this.dataList.findIndex(it => item.name === it.name)
this.dataList.splice(Index, 1)
})
},
draggerEnd(e) {
const newIndex = e.newIndex
this.dataList.splice(newIndex, 0, ...this.selectArr)
const findIndex = this.dataList.findIndex((item => item.name === '选中元素展示区'))
this.dataList.splice(findIndex, 1)
this.show = false
},
}
}
</script>
<style lang="scss" scoped>
.order-box {
padding: 20px 50px;
display: flex;
flex-wrap: wrap;
>span {
flex: 1;
display: flex;
flex-wrap: wrap;
}
.box {
width: 100px;
height: 50px;
background: rgb(7, 174, 215);
margin-right: 10px;
margin-bottom: 10px;
}
.boxs {
width: 100px;
height: 50px;
background: rgb(215, 177, 7);
margin-right: 10px;
margin-bottom: 10px;
}
.card {
background: rgb(128, 68, 0) !important;
}
}
.order-box-show {
padding: 20px 50px;
display: flex;
flex-wrap: wrap;
>span {
flex: 1;
display: flex;
flex-wrap: wrap;
}
.box {
width: 100px;
height: 50px;
background: rgb(7, 174, 215);
margin-right: 10px;
margin-bottom: 10px;
}
.boxs {
width: 100px;
height: 50px;
background: rgb(215, 177, 7);
margin-right: 10px;
margin-bottom: 10px;
}
}
.position {
border: 1px solid red;
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
cursor: pointer;
}
</style>Demo实现效果
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