uniapp 树形组件、机构选择组件、部门选择组件、递归组件的简单实现。

效果

在components目录下定义组件treeNode.vue

<!-- treeNode.vue -->
<template>
	<view>
		<view 
			class="item--list" 
			v-for="(item, index) in list" 
			:key="index"
		>
			<view class="item--title" hover-class="tree__hover-class" @click="selectNode(item)">
				<view>{{ item.name }}</view>
				<view 
					v-if="item.children && item.children.length" 
					class="open__and--close"
					@click.stop="handleOpenClose(item, index)"
				>
				{{ item.isOpen?'收起':'展开'}}</view>
			</view>
			<!-- 使用组件本身渲染子项 -->
			<view v-if="item.isOpen && item.children && item.children.length" class="">
				<treeItem :list="item.children" @change="selectNode"></treeItem>
			</view>
		</view>
	</view>
</template>

<script>
	// 引入当前组件
	import treeItem from '../treeNode/treeNode'
	export default {
		name: 'treeItem',
		components: {
			treeItem
		},
		// 接收列表数据
		props: {
			list: {
				item: Array,
				default: () => []
			}
		},
		methods: {
			// 选中
			selectNode(item) {
				this.$emit('change', item)
			},
			// 处理展开或收起
			handleOpenClose(item, index) {
				// 如果不存在isOpen属性就添加该属性。
				if (!item.hasOwnProperty('isOpen')) {
					item.isOpen = false
				}
				item.isOpen = !item.isOpen
				this.$forceUpdate()
			}
		}
	}
</script>

<style scoped>
	.item--list {
		padding-left: 25rpx;
	}
	.item--title {
		display: flex;
		align-items: center;
		font-size: 28rpx;
		border-bottom: 1rpx solid #f7f7f7;
		padding: 25rpx;
	}
	.open__and--close {
		margin-left: auto;
		font-size: 24rpx;
	}
	.tree__hover-class {
		background-color: #f7f7f7;
	}
</style>

在页面中使用

<template>
	<view style="padding-right: 25rpx;">
		<treeNode :list="list" @change="treeChange"></treeNode>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				list: [{
					id: '1',
					name: '机构一',
					children: [
						{
							id: '101',
							name: '人事部',
							children: []
						},{
							id: '102',
							name: '总部',
							children: [
								{
									id: '1021',
									name: '选项一',
									children: []
								},{
									id: '1022',
									name: '选项二',
									children: []
								},{
									id: '1023',
									name: '选项三',
									children: []
								}
							]
						},{
							id: '103',
							name: '后勤部',
							children: []
						}
					]
				},{
					id: '12',
					name: '机构二',
					children: [
						{
							id: '10121',
							name: '选项一',
							children: []
						},{
							id: '10122',
							name: '选项二',
							children: []
						},{
							id: '10123',
							name: '选项三',
							children: []
						}
					]
				},{
					id: '13',
					name: '机构三',
					children: [{
						id: '10131',
						name: '选项一',
						children: []
					},{
						id: '10132',
						name: '选项二',
						children: []
					},{
						id: '10133',
						name: '选项三',
						children: []
					}]
				}]
			}
		},
		methods: {
			treeChange(e) {
				uni.showToast({
					title: `选中的值：${e.name}`,
					icon: 'none'
				})
			}
		}
	}
</script>

插件地址：https://ext.dcloud.net.cn/plugin?id=13899