import draggable from "vuedraggable"

components: {
 draggable
}

<draggable class="selected-list" tag="ul" 
v-model="selectedTheme" 
v-bind="dragOptions"
 :move="onMove"
 @end="onEnd" 
 >
 <li class="selected-theme"
 v-for="item in selectedTheme"
 :key="item.type"
 >{{item.name}}</li>
</draggable>

<template>
 <div class="theme-setting">
 <el-dialog
 title="设置选项"
 :visible.sync="dialogVisible"
 width="648px"
 :close-on-click-modal="false"
 >
 <div class="theme-left">
  <dl class="theme-title">
  <dt class="title">当前选项</dt>
  <dd class="des">从右侧拖拽添加</dd>
  </dl>
  <draggable class="selected-list" tag="ul" 
  v-model="selectedTheme" 
  v-bind="dragOptions"
  :move="onMove"
  @end="onEnd" 
  >
  <li class="selected-theme"
  v-for="item in selectedTheme"
  :key="item.type"
  >{{item.name}}</li>
  </draggable>
 </div>
 <div class="theme-right">
  <h3 class="theme-right-title">全部选项</h3>
  <draggable class="theme-right-list" tag="ul"
  v-model="unSelectTheme"
  v-bind="dragOptions"
  :move="onMove"
  @end="onEnd">
  <li class="theme-right-item"
  v-for="item in unSelectTheme"
  :key="item.type"
  >{{item.name}}</li>
  </draggable>
 </div>
 <div class="drag-drop-del" v-show="isShowDel">
  <img src="/UploadFiles/2021-04-02/drag_drop_del.png">

总结