使用vue-draggable-plus实现拖拽排序

npm install vue-draggable-plus

<template>
    ...
<VueDraggable
   ref="el"
   v-model="sortList"
   :disabled="disabled"
   :animation="150"
   ghostClass="ghost"
   class="flex flex-col gap-2 p-4 w-300px h-300px m-auto bg-gray-500/5 rounded"
   @start="onStart"
   @update="onUpdate"
   filter=".undraggable"
   handle=".handle"
 >
   <div
     class="sort-item"
     v-for="item in sortList"
     :key="item.id"
     :class="item.id === 1 ? 'undraggable' : ''"
     :style="item.id === 1 ? 'opacity:0.3' : ''"
   >
     <img
       class="delete"
       src="./assets/ic_delete.svg"
       @click="removeItem(item.id)"
     />
     <span>{{ item.name }}</span>
     <img class="handle" src="./assets/ic_items.svg" />
   </div>
 </VueDraggable>
    ...
</template>
<script setup lang="ts">
import { ref } from "vue";
import { type UseDraggableReturn, VueDraggable } from "vue-draggable-plus";
...
const sortShow = ref(false);
const el = ref<UseDraggableReturn>();
const disabled = ref(false);
...
</script>

<template>
  <van-button type="success" @click="sortClick">排列菜单</van-button>
  <div v-for="item in sortList" :key="item.id">{{ item }}</div>
  <van-action-sheet v-model:show="sortShow" title="排序管理">
    <div class="content">
      <!-- 当前排序 -->
      <div class="current-sort">
        <span class="label">当前排序</span>
        <VueDraggable
          ref="el"
          v-model="sortList"
          :disabled="disabled"
          :animation="150"
          ghostClass="ghost"
          class="flex flex-col gap-2 p-4 w-300px h-300px m-auto bg-gray-500/5 rounded"
          @start="onStart"
          @update="onUpdate"
          filter=".undraggable"
          handle=".handle"
        >
          <div
            class="sort-item"
            v-for="item in sortList"
            :key="item.id"
            :class="item.id === 1 ? 'undraggable' : ''"
            :style="item.id === 1 ? 'opacity:0.3' : ''"
          >
            <img
              class="delete"
              src="./assets/ic_delete.svg"
              @click="removeItem(item.id)"
            />
            <span>{{ item.name }}</span>
            <img class="handle" src="./assets/ic_items.svg" />
          </div>
        </VueDraggable>
      </div>
      <!-- 默认子项 -->
      <div class="change-sort">
        <span class="label" style="margin-top: 24px">默认子项</span>
        <div
          class="sort-item"
          v-for="item in constList"
          :key="item.id"
          :style="sortList.find((el) => el.id === item.id) ? 'opacity:0.3' : ''"
        >
          <img
            class="add"
            src="./assets/ic_add.svg"
            @click="addItem(item.id)"
          />
          <span>{{ item.name }}</span>
        </div>
      </div>
    </div>
    <div class="sheet-footer">
      <van-button>取消</van-button>
      <van-button type="primary" @click="onConfirm">保存</van-button>
    </div>
  </van-action-sheet>
</template>
<script setup lang="ts">
import { ref } from "vue";
import { type UseDraggableReturn, VueDraggable } from "vue-draggable-plus";
interface SortItemType {
  name: string;
  id: number;
}
// 当前排列项
let sortList = ref<SortItemType[]>([
  { id: 1, name: "Vue" },
  { id: 2, name: "React" },
  { id: 3, name: "TypeScript" },
  { id: 4, name: "Uniapp" },
  { id: 5, name: "Vite" },
]);
// 对比项(内容不变，作为参照与sortList进行对比)
let constList = ref<SortItemType[]>([
  { id: 2, name: "React" },
  { id: 3, name: "TypeScript" },
  { id: 4, name: "Uniapp" },
  { id: 5, name: "Vite" },
]);
const sortShow = ref(false);
const el = ref<UseDraggableReturn>();
const disabled = ref(false);
const onStart = () => {
  console.log("拖拽前-sortList:", sortList.value);
};
​
const onUpdate = () => {
  console.log("拖拽后-sortList:", sortList.value);
};
​
const sortClick = () => {
  sortShow.value = true;
};
/**
 * 移除当前排列项
 */
const removeItem = (id: number) => {
  if (id === 1) return; // 默认不能删除
  let idx = sortList.value.findIndex((item: SortItemType) => item.id === id);
  if (idx !== -1) {
    sortList.value.splice(idx, 1);
  }
};
/**
 * 新增排列项
 */
const addItem = (id: number) => {
  let idx = sortList.value.findIndex((item: SortItemType) => item.id === id);
  if (idx === -1) {
    sortList.value.push(
      constList.value.find((item: SortItemType) => item.id === id),
    );
  }
};
/**
 * 保存当前排序
 */
const onConfirm = () => {
  sortList.value.map((item: any, index: number) => {
    item.sortOrder = index + 1;
  });
  sortShow.value = false;
};
</script>
​
<style lang="less" scoped>
.content {
  .label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    color: #969799;
    height: 18px;
    padding-left: 16px;
    margin-bottom: 16px;
  }
  .sort-item {
    margin-bottom: 16px;
    font-weight: 600;
    font-size: 15px;
    color: #323233;
    position: relative;
    .delete,
    .add {
      vertical-align: middle;
      margin: 0 12px 0 19px;
    }
    .handle {
      vertical-align: middle;
      position: absolute;
      right: 15px;
    }
  }
}
.sheet-footer {
  display: flex;
  justify-content: center;
  padding: 10px;
  .van-button {
    width: 165px;
    height: 40px;
    margin: 0 6px;
  }
}
</style>
​