Vue2.0权限树组件实现代码

<el-tree :data="data" ></el-tree> 

<template>  <li :class="[isButton, hasBorder]" style="list-style:none;">   <span @click="toggle" v-show="model.menuLevel!==1" >    <i v-if="isFolder" class="icon" :class="[open ? 'folder-open': 'folder']" style="margin-bottom: 3px;"></i>    <i v-if="!isFolder" class="icon file-text"></i>    <input type="checkbox" class="checkCls" @click.stop="selTree(model)" :id="'menu'+model.id" :class="'group'+label">    {{ model.menuName }}   </span>   <ul v-show="open" v-if="isFolder">    <tree-menu v-for="(item, index) in model.childNode" :model="item" :key="index" :menuList="menuList" :label="label" :selectKeys="selectKeys" ></tree-menu>   </ul>  </li> </template>  <script type="text/ecmascript-6"> import $ from 'jquery' export default {  name: 'treeMenu',  props: ['model', 'menuList', 'label', 'selectKeys'],  data () {   return {    open: true, // 默认打开彩单树    selAllkeys: []   }  },  computed: {   isFolder: function () {    return this.model.childNode && this.model.childNode.length   },   isButton: function () {    if (this.model.buttonControl === '1') {     return 'btnCls'    } else {     return 'menuCls'    }   },   hasBorder: function () {    if (this.model.menuLevel === 1) {     return 'blk_border'    }   }  },  methods: {   getAllKeys () {    var keys = []    var objs = $('.group' + this.label + ':checked')    for (let i = 0; i < objs.length; i++) {     let id = objs[i].id     id = id.substring(4)     keys.push((id - 0)) // 保存选中菜单id    }    return keys   },   toggle: function () {    if (this.isFolder) {     this.open = !this.open    }   },   // 根据id获取menu对象   getMeunById (id, allMenuList) {    var menu = {}    if (allMenuList.id === id) { // 一级菜单     menu = allMenuList    } else if (allMenuList.childNode && allMenuList.childNode.length) { // 二级菜单     for (let i = 0; i < allMenuList.childNode.length; i++) {      if (allMenuList.childNode[i].id === id) {       menu = allMenuList.childNode[i]       break      } else if (allMenuList.childNode[i].childNode && allMenuList.childNode[i].childNode.length) { // 三级       for (let j = 0; j < allMenuList.childNode[i].childNode.length; j++) {        if (allMenuList.childNode[i].childNode[j].id === id) {         menu = allMenuList.childNode[i].childNode[j]         break        }       }      }     }    }    return menu   },   // checkbox点击事件   selTree (model) {    var obj = $('#menu' + model.id)[0] // checkbox DOM对象    if (obj.checked) { // 选中     // 若存在下级，下级全部选中     if (model.childNode && model.childNode.length) {      this.subMenusOp(model.childNode, 1)     }     // 若存在上级,确认是否需要选中上级CheckBox     if (model.supMenuID !== 0 && model.menuLevel > 2) {      this.supMenusOp(model.supMenuID, 1)     }    } else { // 取消     // 若存在下级，下级全部取消     if (model.childNode && model.childNode.length) {      this.subMenusOp(model.childNode, 0)     }     // 若存在上级，确认是否需要取消上级CheckBox     if (model.supMenuID !== 0 && model.menuLevel > 2) {      this.supMenusOp(model.supMenuID, 0)     }    }    this.getAllKeys()   },   // 下级菜单操作 flag=1为选中,flag=0为取消   subMenusOp (childNodes, flag) {    for (let i = 0; i < childNodes.length; i++) {     var menu = childNodes[i]     var id = menu.id     if (flag === 1) { // 选中      $('#menu' + id)[0].checked = true     } else { // 取消      $('#menu' + id)[0].checked = false     }     if (menu.childNode && menu.childNode.length) {      this.subMenusOp(menu.childNode, flag)     }    }   },   // 上级菜单操作（选中:flag=1,取消:flag=0）   supMenusOp (id, flag) {    var menu = this.getMeunById(id, this.menuList)    if (menu.childNode && menu.childNode.length) {     var childLength = menu.childNode.length // 直接子级个数     var selectCount = 0     for (let i = 0; i < childLength; i++) {      let id1 = menu.childNode[i].id      if ($('#menu' + id1)[0].checked) {       selectCount++      }     }     if (flag === 1) { // 选中      if (childLength === selectCount) {       $('#menu' + id)[0].checked = true       if (menu.supMenuID !== 0 && menu.menuLevel > 2) {        this.supMenusOp(menu.supMenuID, flag)       }      }     } else if (flag === 0) {      if (childLength !== selectCount) {       $('#menu' + id)[0].checked = false       if (menu.supMenuID !== 0 && menu.menuLevel > 2) {        this.supMenusOp(menu.supMenuID, flag)       }      }     }    }   },   // 计算所有下级节点是否全部选中，是返回true，否返回false   isAllSel (childNodes, selectKeys) {    var nodeKeys = [] // 选中的id集合    this.addKeys(childNodes, selectKeys, nodeKeys)    var allKeys = []    this.getNodesCount(childNodes, allKeys)    if (nodeKeys.length === allKeys.length) {     return true    } else {     return false    }   },   // 计算childNodes下选中的id集合   addKeys (childNodes, selectKeys, Arrs) {    for (let i = 0; i < childNodes.length; i++) {     if (selectKeys.indexOf(childNodes[i].id) >= 0) {      Arrs.push(childNodes[i].id)     }     if (childNodes[i].childNode && childNodes[i].childNode.length) {      this.addKeys(childNodes[i].childNode, selectKeys, Arrs)     }    }   },   // 计算childNodes的子级数   getNodesCount (childNodes, allKeys) {    for (let i = 0; i < childNodes.length; i++) {     allKeys.push(childNodes[i].id)     if (childNodes[i].childNode && childNodes[i].childNode.length) {      this.getNodesCount(childNodes[i].childNode, allKeys)     }    }   }  },  mounted () {   // 禁止复选框的冒泡事件   $("input[type='checkbox']").click(function (e) {    e.stopPropagation()   })   // 选中菜单使能   if (this.selectKeys instanceof Array && this.selectKeys.length > 0 && this.selectKeys.indexOf(this.model.id) >= 0) {    if (this.model.childNode && this.model.childNode.length && this.model.menuLevel !== 1) { // 包含子级,一级菜单除外     // 计算所有子节点是否全部选中     if (this.isAllSel(this.model.childNode, this.selectKeys)) {      $('#menu' + this.model.id)[0].checked = true     }    } else {     $('#menu' + this.model.id)[0].checked = true    }   }  } } </script>  <style> .blk_border{  border:1px solid #d1dbe5;  padding-bottom: 15px; } .blk_border ul{  padding-left: 15px; } ul {  list-style: none; } i.icon {  display: inline-block;  width: 15px;  height: 15px;  background-repeat: no-repeat;  vertical-align: middle; } .icon.folder {  background-image: url(../../images/close.png); } .icon.folder-open {  background-image: url(../../images/open.png); } .tree-menu li {  line-height: 1.5; } li.btnCls {  float: left;  margin-right: 10px; } li.menuCls {  clear: both;  line-height:30px; } .checkCls {  vertical-align: middle; } .el-tabs__content{  color:#48576A; } </style> 权限树的数据结构有一定要求，比element的tree控件数据结构属性稍多一些，否则实现也不会这么简单了，优化后的权限树数据结构在选中菜单返回上简化了很多，也没有用到vuex。权限树数据结构为：{   'childNode': [    {     'childNode': [      {       'icon': '',       'id': 242,       'menuLevel': 3,       'menuName': '旅游订单',       'menuTop': 1,       'menuUrl': '/',       'buttonControl': '0',       'supMenuID': 241      },      {       'icon': '',       'id': 243,       'menuLevel': 3,       'menuName': '签证订单',       'menuTop': 2,       'menuUrl': '/',       'buttonControl': '0',       'supMenuID': 241      },      {       'icon': '',       'id': 244,       'menuLevel': 3,       'menuName': '出团通知书',       'menuTop': 3,       'menuUrl': '/',       'buttonControl': '0',       'supMenuID': 241      }     ],     'icon': '',     'id': 241,     'menuLevel': 2,     'menuName': '订单管理',     'menuTop': 1,     'menuUrl': '/',     'buttonControl': '0',     'supMenuID': 240    },    {     'childNode': [      {       'icon': '',       'id': 246,       'menuLevel': 3,       'menuName': '旅游产品',       'menuTop': 1,       'menuUrl': '/tourProduct',       'buttonControl': '0',       'supMenuID': 245      },      {       'icon': '',       'id': 247,       'menuLevel': 3,       'menuName': '图库',       'menuTop': 2,       'menuUrl': '/basePicStore',       'buttonControl': '0',       'supMenuID': 245      },      {       'icon': '',       'id': 248,       'menuLevel': 3,       'menuName': '签证产品',       'menuTop': 3,       'menuUrl': '/',       'buttonControl': '0',       'supMenuID': 245      }     ],     'icon': '',     'id': 245,     'menuLevel': 2,     'menuName': '产品管理',     'menuTop': 2,     'menuUrl': '/',     'buttonControl': '0',     'supMenuID': 240    },    {     'childNode': [      {       'icon': '',       'id': 250,       'menuLevel': 3,       'menuName': '旅游广告',       'menuTop': 1,       'menuUrl': '/',       'buttonControl': '0',       'supMenuID': 249      }     ],     'icon': '',     'id': 249,     'menuLevel': 2,     'menuName': '广告管理',     'menuTop': 3,     'menuUrl': '/',     'buttonControl': '0',     'supMenuID': 240    }   ],   'icon': '',   'id': 240,   'menuLevel': 1,   'menuName': '业务中心',   'menuTop': 1,   'menuUrl': '/',   'buttonControl': '0',   'supMenuID': 0  } 

<el-tab-pane v-for="(menu, index) in theModel" :key="index" :label="menu.menuName">  <my-tree :model="menu" ref="tree" :menuList="menu" :label="index" :selectKeys="selectKeys"></my-tree> </el-tab-pane>