本文介绍了基于 Vue 的树形选择组件。分享给大家，具体如下：
系统要求：Vue 2
基本特性
- 完美的多级联动效果
- 支持无限多的分级
- 有 全选、半选、不选 三种状态
截图展示
代码如下：
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <link rel="icon" href="https://v1-cn.vuejs.org/images/logo.png" rel="external nofollow" type="image/x-icon"> <title>Vue Tree Select Example</title> <script src="https://cdn.bootcss.com/vue/2.4.2/vue.js"></script></head><body> <!-- 递归引用的模板 --> <template id="one-select" style="display: none;"> <ul> <li v-for="(node, key, index) in tree"> <div v-if="key != 'selected'"> <div v-on:click="nodeClick(node, index)" v-bind:class="[node.selected == null ? 'tree-select-null' : (node.selected == 'half' ? 'tree-select-half' : 'tree-select-full'), 'tree-select', 'inline-block']"></div> <div class="inline-block">{{ key }}</div> <div v-if="key != ''"> <one-select v-bind:tree="node" v-bind:isroot="false"></one-select> </div> </div> </li> </ul> </template> <!-- 整体树容器 --> <div id="tree"> <one-select v-bind:isroot="true" v-bind:tree="tree"></one-select> </div><textarea id="treeDataJSON" style="display: none;">{ "客户管理": { "我的客户": { "新分配": {}, "跟进中": {}, "签单客户": {}, "长期客户": {} }, "长期客户权限": { "设为长期客户": {}, "还原长期客户": {} } }, "采购列表": { "添加异常客情": {}, "添加采购单": {}, "采购退货单列表": {}, "供应商管理": {}, "供应商联系人": {}, "品牌列表": { "宝洁": {}, "乐视": { "乐视网": {}, "乐视手机": { "乐视手机 1": {}, "乐视手机 2": {}, "乐视手机 3": {}, "乐视手机 4": {}, "乐视手机 5": { "体验超深层级": { "继续体验超深层级": { "依然体验超深层级": {}, "依然体验超深层级 2": {} } } } }, "乐视电视": {} }, "可口可乐": {}, "圣象": {} } }}</textarea><script>// 初始数据var treeDataJSON = document.getElementById("treeDataJSON").value;var treeData = JSON.parse(treeDataJSON);Vue.component('one-select', { name: 'one-select', template: '#one-select', props: ['tree', 'isroot'], created: function() { var realTree = Object.assign({}, this.tree); delete realTree.selected; if (Object.keys(realTree).length === 0) { // 判断最低级，再刷新父级 this.refreshAllParentNodes(this.$parent); } }, methods: { nodeClick: function(node, index) { if (node.selected === 'full' || node.selected === 'half') { Vue.set(node, 'selected', null); } else { Vue.set(node, 'selected', 'full'); } this.refreshAllParentNodes(self.$parent); this.refreshAllParentNodes(this); this.refreshAllSonNodes(this.$children[index], node.selected); }, refreshAllSonNodes: function(node, status) { if (node instanceof Vue && node.$children.length) { for (index in node.$children) { Vue.set(node.$children[index].tree, 'selected', status); // 递归计算子级 this.refreshAllSonNodes(node.$children[index], status); } } }, refreshAllParentNodes: function(node) { if (node instanceof Vue) { var status = null; var nullCount = 0; var halfCount = 0; var fullCount = 0; for (index in node.$children) { if (typeof node.$children[index].tree.selected === 'undefined') { nullCount++; } else if (node.$children[index].tree.selected === null) { nullCount++; } else if (node.$children[index].tree.selected === 'half') { halfCount++; } else if (node.$children[index].tree.selected === 'full') { fullCount++; } } if (fullCount === node.$children.length) { status = 'full'; } else if (nullCount === node.$children.length) { status = null; } else { status = 'half'; } Vue.set(node.tree, 'selected', status); // 递归计算父级 this.refreshAllParentNodes(node.$parent); } }, log: function(o) { console.log(o); } }});vm = new Vue({ el: '#tree', data: { tree: treeData }, methods: { // 返回最终数据 getResult: function() { return Object.assign({}, this.tree); } }});</script><style>#tree { width: 500px; margin: 0 auto; margin-top: 50px;}li { list-style: none; line-height: 25px;}.inline-block { display: inline-block;}.tree-select { width: 13px; height: 13px; line-height: 16px; margin: 3px; display: inline-block; vertical-align: middle; border: 0 none; cursor: pointer; outline: none; background-color: transparent; background-repeat: no-repeat; background-attachment: scroll; background-image: url('selects.png');}.tree-select-null { background-position: 0 0;}.tree-select-full { background-position: -14px 0;}.tree-select-half { background-position: -14px -28px;}</style></body></html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
