vue.js树型结构实现

参考：http://www.cnblogs.com/ychl/p/6075106.html

虽然文章给出的方法可以实现树结构，使用的图标是boostrap提供的fa类别的图标。参考文献中的代码：

父组件中引入items

  <items  :model="model" v-for="model in data"></items>

以下是items.vue的内容
<template>
    <li>
        <div @click="toggle">
            <i v-if="isFolder" class="fa " :class="[open?"fa-folder-open":"fa-folder"]"></i>
            <!--isFolder判断是否存在子级改变图标-->
            <i v-if="!isFolder" class="fa fa-file-text"></i> {{model.data.menuName}}
        </div>
        <ul v-show="open" v-if="isFolder">
            <items v-for="cel in model.childTreeNode" :model="cel"></items>
        </ul>
    </li>
</template>
<script type="text/javascript">
    export default {
        name: "items",
        props: ["model"],
        components: {},
        data() {
            return {
                open: false,
                isFolder: true
            }
        },
        computed: {
            isFolder: function() {
                return this.model.childTreeNode && this.model.childTreeNode.length
            }
        },
        methods: {
            toggle: function() {
                if(this.isFolder) {
                    this.open = !this.open
                }
            },
        }
    }
</script>

但是如果使用的话，还需要做一些修改

1. 去掉li标签

   <li style="list-style-type:none;">
        <div @click="toggle">
            <i v-if="isFolder" class="fa " :class="[open?"fa-folder-open":"fa-folder"]"></i>
            <!--isFolder判断是否存在子级改变图标-->
            <i v-if="!isFolder" class="fa fa-file-text"></i> {{model.data.menuName}}
        </div>
        <ul v-show="open" v-if="isFolder">
            <items v-for="cel in model.childTreeNode" :model="cel"></items>
        </ul>
    </li>

2. 为了使得可以选中的子节点能够返回父控件，增加交互性，需要可以让子控件能够传递给父控件数据，但是子控件是循环嵌套的，因此需要层层上传，直到父控件。

采用：子控件像父控件传送数据

<template>
    <li  style="list-style-type:none;">
        <div @click="toggle">
            <i v-if="isFolder" class="fa text-yellow" :class="[open?"fa-folder-open":"fa-folder"]" ></i>
            <!--isFolder判断是否存在子级改变图标-->
            <i v-if="!isFolder" class="fa fa-file-text text-blue" ></i> {{model.data.menuName}}
        </div>
        <ul v-show="open" v-if="isFolder">
           <items v-for="cel in model.childTreeNode" :model="cel" @upup="change" :choose="choose"></items>
        </ul>
    </li>
</template>
<script type="text/javascript">
import $ from "jquery";
var VueRouter = require("vue-router");
    
    export default {
        name: "items",
        props: ["model"],
        components: {},
        data() {
            return {
                open: false,
                isFolder: true,
                choose:""
            }
        },
        computed: {
            isFolder: function() {
                return this.model.childTreeNode && this.model.childTreeNode.length
            }
        },
        methods: { 
        
         change(choose){
            this.choose=choose;
              this.$emit("upup",this.choose);
        },
            toggle: function() {
                this.choose=this.model.data.menuCode;
                this.$emit("upup",this.choose); 

                if(this.isFolder) {
                    this.open = !this.open
                }
                
                    
            },
        }
    }
</script>

父控件调用： 

template中：

  <items  :model="model" @upup="change" :choose="choose" v-for="model in data"></items>
                  {{choose}}

script中：

import items from "../../components/items.vue";
    
module.exports = {
components: {
      items
 },
data: function() {
    return {
      choose:""
 }
methods: {  
        change(choose){
            this.choose=choose;
 }
}

数据类型

var data = [{
                "id": "1",
                "data": {
                    "menuName": "项目管理",
                    "menuCode": "",
                },
                "childTreeNode": [{
                    "data": {
                        "menuName": "项目",
                        "menuCode": "BusProject",
                    },
                    "childTreeNode": []
                }, {
                    "data": {
                        "menuName": "我的任务",
                        "menuCode": "BusProject",
                    },
                    "childTreeNode": []
                }, {
                    "data": {
                        "menuName": "人员周报",
                        "menuCode": "BusProject",
                    },
                    "childTreeNode": []
                }]
            }, {
                "id": "2",
                "data": {
                    "menuName": "数据统计",
                    "menuCode": "BusClock",
                },
                "childTreeNode": []
            }, {
                "id": "3",
                "data": {
                    "menuName": "人事管理",
                    "menuCode": "",
                },
                "childTreeNode": []
            }, {
                "id": "4",
                "data": {
                    "menuName": "基础管理",
                    "menuCode": "",
                },
                "childTreeNode": []
            }]