效果图

 效果说明

每一组数据只能在对应的二级类目中进行上下移动，当点击上移图标的时候【左边的】会将当前元素与上一个元素交换位置，当点击的元素为该组的第一个元素时，将提示已经是第一项了并且不能进行移动；当点击下移图标的时候【右边的】会将当前元素与下一个元素交换位置，当点击的元素为该组的最后一个元素时，将提示已经是最后一项了并且不能进行移动。

效果实现代码

本效果需要用到 vue、vur-router、scss、element plus

第一步：创建项目

yarn create vite demo

第二步：安装所需要的依赖

yarn
yarn add vue-router
yarn add sass sass-loader
yarn add element-plus
yarn add path

第三步：配置别名@，并设置element组件的按需导入

vite.config.js

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import path from 'path'
import AutoImport from 'unplugin-auto-import/vite'
import Components from 'unplugin-vue-components/vite'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'// https://vitejs.dev/config/
export default defineConfig({plugins: [vue(),AutoImport({resolvers: [ElementPlusResolver()],}),Components({resolvers: [ElementPlusResolver()],})],resolve: {alias: {'@': path.resolve(__dirname, 'src')}},
})

main.js

import { createApp } from 'vue'
import './style.css'
import App from './App.vue'
import router from './router'
import 'element-plus/es/components/message/style/css'createApp(App).use(router).mount('#app')

第四步：创建Drag组件，并书写相关的逻辑代码

src/views/Drag.vue

<template><div><div v-for="obj in showList" :key="obj.id"><div class="obj">{{ obj.title }}</div><div class="item" v-for="(item, index) in obj.children" :key="item.id"><span>{{ item.title }}</span><div><imgsrc="@/assets/imgs/上移.png"alt="上移"title="上移"@click="handleMove('up', obj, index)"/><imgsrc="@/assets/imgs/下移.png"alt="下移"title="下移"@click="handleMove('dowm', obj, index)"/></div></div></div></div>
</template><script setup>
import { ref } from "vue";const list = [{id: 1,title: "课程",children: [{ id: 2, title: "课程1" },{ id: 3, title: "课程2" },{ id: 4, title: "课程3" },],},{id: 5,title: "星期",children: [{id: 6,title: "周一",},{id: 7,title: "周二",},],},
];
const showList = ref(list);const handleMove = (type, obj, index) => {let warningMessage = "";let swapIndex = -1;if (type === "up") {if (index === 0) {warningMessage = "已经是第一项了";} else {swapIndex = index - 1;}} else {if (index === obj.children.length - 1) {warningMessage = "已经是最后一项了";} else {swapIndex = index + 1;}}if (warningMessage) {ElMessage.warning(warningMessage);return;}showList.value.forEach((element) => {if (element.id === obj.id) {const temp = element.children[swapIndex];element.children[swapIndex] = element.children[index];element.children[index] = temp;}});
};
</script><style lang="scss" scoped>
.obj {margin: 20px;padding: 20px;background: #b8b6b6;
}
.item {margin: 10px 30px;padding: 10px;display: flex;justify-content: space-between;background: #f0f0f0;img {width: 20px;height: 20px;margin-right: 20px;}
}
</style>

第五步：创建路由文件

src/router/index.js

import { createRouter, createWebHistory } from 'vue-router'
const routes = [{path: '/',component: () => import('@/views/Drag.vue')}
]
// 创建路由
const router = createRouter({history: createWebHistory(),routes
})
// 导出路由
export default router

通过以上代码即可实现图片中的效果