详解Vue2 无限级分类(添加,删除,修改)

时间:2020-05-15 木子炜培先生人气:0
本人对vue不是很懂,搜索了很多关于Vue2 无限级分类介绍,下面我来记录一下,有需要了解Vue2 无限级分类的朋友可参考。希望此文章对各位有所帮助。
<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>Vue 树</title>
 <script src="https://unpkg.com/vuehttps://img.qb5200.com/download-x/dist/vue.js"></script>
 <style type="text/css">
 a{color: #333; text-decoration: none;}
 ul{padding-left: 15px;}
 </style>
</head>
<body>
 <div id="app">
  {{items}}
  <treelist v-for="(val, index) in items" :item="val" @remove="delItem(index)"></treelist>
 </div>
 <template id="treelist-template">
  <ul>
   <div style="padding:5px 0;">
    <a v-if="isFolder" @click="toggle()">[{{open ? '-' : '+'}}]</a>
    <a v-else style="color:#FFF;">[+]</a>
    <input type="number" style="width:80px;" v-model="item.sort">
    <input type="text" size="30" v-model="item.name" placeholder="岗位名称">
    <button type="button" @click="addChild()">添加</button>
    <button type="button" @click="$emit('remove')" v-if="!isFolder">删除</button>
   </div>
   <ul v-show="open" v-if="isFolder">
    <treelist v-for="(val, index) in item.children" :item="val" @remove="delItem(index)"></treelist>
   </ul>
  </ul>
 </template>
<script>
window.onload = function(){
 //treelist组件
 Vue.component('treelist', {
  template: '#treelist-template',
  props: {
   item: Object
  },
  data: function() {
   return {
    open: false
   }
  },

  computed: {
   isFolder: function() {
    return this.item.children && this.item.children.length
   }
  },

  methods: {
   toggle: function() {
    if (this.isFolder) {
     this.open = !this.open
    }
   },
   
   addChild: function() {
    /*添加内容但不同步到服务器*/
    if (!this.isFolder) {
       Vue.set(this.item, 'children', [])
     }
    this.open = true
    this.item.children.push({
     sort: 0,
     name: '',
     status: 1,
     parent_id: this.item['id']
    })
   },
   delItem: function(index){
     this.item['children'].splice(index, 1)
   }
  }
 })

 new Vue({
  el: '#app',
  data:{
   mydata: {},
   items: [
     {"id":"10","parent_id":"0","sort":"0","name":"其它","status":"0"},
     {"id":"12","parent_id":"0","sort":"0","name":"测试","status":"0"},
     {"id":"1","parent_id":"0","sort":"0","name":"水果","status":"0",
       "children":[
         {"id":"4","parent_id":"1","sort":"0","name":"香蕉","status":"0"}
       ]
     },
     {"id":"2","parent_id":"0","sort":"0","name":"饮料","status":"0",
       "children":[
         {"id":"5","parent_id":"2","sort":"0","name":"可乐","status":"0"},
         {"id":"6","parent_id":"2","sort":"0","name":"酒水","status":"0",
           "children":[
             {"id":"7","parent_id":"6","sort":"0","name":"啤酒","status":"0"}
           ]
         }
       ]
     },
     {"id":"3","parent_id":"0","sort":"0","name":"美食","status":"0",
       "children":[
         {"id":"8","parent_id":"3","sort":"0","name":"红烧鱼","status":"0"}
       ]
     }
   ]
  },

  methods: {
   add:function(){
    this.mydata['id'] = 100;//从服务器返回的ID号
    this.mydata['status'] = 0;
    this.mydata['parent_id'] = 0;
    this.items.push(this.mydata);
    this.mydata = {};
   },

   delItem: function(index){
     this.items.splice(index, 1)
   }
  }
 });
}

</script>
</body>
</html>
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