Vue实用功能之实现拖拽元素、列表拖拽排序

yarn add vuedraggable
npm i -S vuedraggable

<template>
<div>
<!--使用draggable组件-->
<div class="itxst">
<div>自定义控制拖拽和停靠</div>
<div class="col">
<!-- 左边容器 -->
<!--
group： :group= "name"，相同的组之间可以相互拖拽或者 { name: "...", pull: [true, false, 'clone', array , function], put: [true, false, array , function] }
ghostClass：:ghostClass="ghostClass" 设置拖动元素的占位符类名,你的自定义样式可能需要加!important才能生效，并把forceFallback属性设置成true
chosenClass :ghostClass="hostClass" 被选中目标的样式，你的自定义样式可能需要加!important才能生效，并把forceFallback属性设置成true
filter :filter=".unmover" 设置了unmover样式的元素不允许拖动
-->
<draggable v-model="arr1" group="itxst" ghostClass="ghost" chosenClass="chosen" filter=".forbid" animation="300"
:move="onMove">
<transition-group>
<div :class="item.id==1?'item forbid':'item'" v-for="item in arr1" :key="item.id">{{item.name}}</div>
</transition-group>
</draggable>
</div>
<!-- 右边容器 -->
<div class="col">
<draggable v-model="arr2" group="itxst" ghostClass="ghost" chosenClass="chosen" filter=".forbid" animation="300"
:move="onMove">
<transition-group>
<div :class="item.id==1?'item forbid':'item'" v-for="item in arr2" :key="item.id">{{item.name}}</div>
</transition-group>
</draggable>
</div>
</div>
</div>
</template>
<script>
//导入draggable组件
import draggable from 'vuedraggable'
export default {
//注册draggable组件
components: {
draggable,
},
data() {
return {
//定义要被拖拽对象的数组
arr1: [{
id: 1,
name: 'www.itxst.com（不允许停靠）'
},
{
id: 2,
name: 'www.jd.com'
},
{
id: 3,
name: 'www.baidu.com'
},
{
id: 5,
name: 'www.google.com'
},
{
id: 4,
name: 'www.taobao.com（不允许拖拽）'
}
],
arr2: [{
id: 11,
name: '微软'
},
{
id: 12,
name: '亚马逊'
},
{
id: 13,
name: '京东'
},
{
id: 15,
name: '谷歌'
},
{
id: 14,
name: '苹果'
}
]
};
},
methods: {
//move回调方法
onMove(e, originalEvent) {
console.log(e)
console.log(originalEvent)
//不允许停靠
if (e.relatedContext.element.id == 1) return false;
//不允许拖拽
if (e.draggedContext.element.id == 4) return false;
return true;
},
},
};
</script>
<style scoped>
/*定义要拖拽元素的样式*/
.drag {
background-color: blue !important;
border: solid 3px red;
}
.chosen {
background-color: #333 !important;
color: #fff;
}
.ghost {
background-color: red !important;
}
.itxst {
margin: 10px;
text-align: left;
}
.col {
width: 40%;
flex: 1;
padding: 10px;
border: solid 1px #eee;
border-radius: 5px;
float: left;
}
.col+.col {
margin-left: 10px;
}
.item {
padding: 6px 12px;
margin: 0px 10px 0px 10px;
border: solid 1px #eee;
background-color: #f1f1f1;
text-align: left;
}
.item+.item {
border-top: none;
margin-top: 6px;
}
.item:hover {
background-color: #fdfdfd;
cursor: move;
}
</style>

<template>
  <div>
    <transition-group
      name="drag"
      class="list"
      tag="ul"
    >
      <li
        @dragenter="dragenter($event, index)"
        @dragover="dragover($event, index)"
        @dragstart="dragstart(index)"
        draggable
        v-for="(item, index) in list"
        :key="item.label"
        class="list-item">
        {{item.label}}
      </li>
    </transition-group>
  </div>
</template>
<script>
export default {
  data() {
    return {
      list: [
        { label: '列表1' },
        { label: '列表2' },
        { label: '列表3' },
        { label: '列表4' },
        { label: '列表5' },
        { label: '列表6' },
      ],
      dragIndex: '',
      enterIndex: '',
    };
  },
  methods: {
    shuffle() {
      this.list = this.$shuffle(this.list);
    },
    dragstart(index) {
      this.dragIndex = index;
    },
    dragenter(e, index) {
      e.preventDefault();
      // 避免源对象触发自身的dragenter事件
      if (this.dragIndex !== index) {
        const moving = this.list[this.dragIndex];
        this.list.splice(this.dragIndex, 1);
        this.list.splice(index, 0, moving);
        // 排序变化后目标对象的索引变成源对象的索引
        this.dragIndex = index;
      }
    },
    dragover(e, index) {
      e.preventDefault();
    },
  },
};
</script>
<style lang="scss" scoped>
.list {
  list-style: none;
  .drag-move {
    transition: transform .3s;
  }
  .list-item {
    cursor: move;
    width: 300px;
    background: #EA6E59;
    border-radius: 4px;
    color: #FFF;
    margin-bottom: 6px;
    height: 50px;
    line-height: 50px;
    text-align: center;
  }
}
</style>