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vue實現(xiàn)樹形菜單效果

更新時間：2018年03月19日 09:02:42 作者：kerryk

這篇文章主要為大家詳細介紹了vue實現(xiàn)樹形菜單效果，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文實例為大家分享了vue實現(xiàn)樹形菜單效果展示的具體代碼，供大家參考，具體內(nèi)容如下

<!DOCTYPE html>
<html>
 <head>
 <meta charset="UTF-8">
 <title>vue</title>
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" href="animate.css">
 <script src="vue.js"></script>

 <style>
  *{
  color:#585858;
  
  }
  #app{
  min-height: 650px;
  }
  #app li{
  list-style-type:none;
  }
  #app a{
  text-decoration:none;
  }
  #app button{
  width:100%;
  }
  #app ul{
  padding:10px;
  }
  #app span{
  cursor:pointer;
  }
  #tree{
  border: 1px solid #ccc;  
  min-height: 650px;
  width: 50%;
  margin:0;
  padding-top: 10px;
  background-color:#f2f2f2;
  position: absolute;
  top:0;
  left:0;
  }
  
  #tree li {
  display: block;
  padding: 0;
  margin: 0;
  border: 0;
  border-bottom: 1px solid #e5e5e5;
  min-height: 32px;
  line-height:32px;
  }
 </style>
 </head>

 <body>

 <div id='app' @click='hideTree($event)'>
  <button @click.stop="show = !show">點我</button>
  
  <transition enter-active-class="animated fadeInLeft" leave-active-class="animated fadeOutLeft">
  <item v-bind:tree='treeData' id='tree' v-if="show"></item> 
  </transition> 
 </div>


 <template id='tree-template'>
  <ul>
  <li v-for='(v,i) in tree'> 
   <span v-if="isFolder(v)" @click="toggle(i)">{{ tree[i].open ? '-' : '+' }}</span>
   <a data-id="v.id">{{v.city}}</a> 
   <item v-bind:tree='v.child' v-show="tree[i].open"></item>
  </li>
  </ul> 
 </template>

 <script>
  var data = [{"id":26,"pid":1,"city":"四川省"},{"id":30,"pid":1,"city":"云南省"},{"id":322,"pid":26,"city":"成都"},{"id":323,"pid":26,"city":"綿陽"},{"id":324,"pid":26,"city":"阿壩"},{"id":325,"pid":26,"city":"巴中"},{"id":326,"pid":26,"city":"達州"},{"id":327,"pid":26,"city":"德陽"},{"id":328,"pid":26,"city":"甘孜"},{"id":329,"pid":26,"city":"廣安"},{"id":330,"pid":26,"city":"廣元"},{"id":331,"pid":26,"city":"樂山"},{"id":332,"pid":26,"city":"涼山"},{"id":333,"pid":26,"city":"眉山"},{"id":334,"pid":26,"city":"南充"},{"id":335,"pid":26,"city":"內(nèi)江"},{"id":336,"pid":26,"city":"攀枝花"},{"id":337,"pid":26,"city":"遂寧"},{"id":338,"pid":26,"city":"雅安"},{"id":339,"pid":26,"city":"宜賓"},{"id":340,"pid":26,"city":"資陽"},{"id":341,"pid":26,"city":"自貢"},{"id":342,"pid":26,"city":"瀘州"},{"id":367,"pid":30,"city":"昆明"},{"id":378,"pid":30,"city":"曲靖"},{"id":3100,"pid":367,"city":"盤龍區(qū)"},{"id":3101,"pid":367,"city":"五華區(qū)"},{"id":3102,"pid":367,"city":"官渡區(qū)"},{"id":3103,"pid":367,"city":"西山區(qū)"},{"id":3104,"pid":367,"city":"東川區(qū)"},{"id":3105,"pid":367,"city":"安寧市"},{"id":3106,"pid":367,"city":"呈貢縣"},{"id":3107,"pid":367,"city":"晉寧縣"},{"id":3108,"pid":367,"city":"富民縣"},{"id":3109,"pid":367,"city":"宜良縣"},{"id":3110,"pid":367,"city":"嵩明縣"},{"id":3111,"pid":367,"city":"石林縣"},{"id":3112,"pid":367,"city":"祿勸"},{"id":3113,"pid":367,"city":"尋甸"},{"id":3189,"pid":378,"city":"麒麟?yún)^(qū)"},{"id":3190,"pid":378,"city":"宣威市"},{"id":3191,"pid":378,"city":"馬龍縣"},{"id":3192,"pid":378,"city":"陸良縣"},{"id":3193,"pid":378,"city":"師宗縣"},{"id":3194,"pid":378,"city":"羅平縣"},{"id":3195,"pid":378,"city":"富源縣"},{"id":3196,"pid":378,"city":"會澤縣"},{"id":3197,"pid":378,"city":"沾益縣"}];

  var treeData = createTree({
  idname:'id',
  pidname:'pid',
  rootid:1,
  data:data
  });

  function createTree(arg){
  var idname = arg.idname,
   pidname = arg.pidname,
   rootid = arg.rootid,
   data = arg.data,
   treeData = [];
  var _createTree = function(id){
   var ret = []; 
   var index = 0;
   for(var i = 0; i < data.length; i++){  
   if(data[i][pidname] == id){
    ret[index] = data[i];
    ret[index].child = _createTree(data[i][idname]);
    index++;
   } 

   }
   return ret;
  }

  var index = 0;
  for(var i = 0; i < data.length; i++){  
   if(data[i][pidname] == rootid){
   treeData[index] = data[i];
   treeData[index].child = _createTree(data[i][idname]);
   index++;
   } 
  }
  return treeData;
  }

  Vue.component('item', {
  template: '#tree-template',
  props: ['tree'],
  data: function () {
   return {}
  },
  methods: {
   toggle: function (i) {
   this.tree[i].open = !this.tree[i].open;
   this.$set(this.tree, i, this.tree[i]);
   },
   isFolder: function (data) {
   return data.child && data.child.length
   },

  },
  })

  var vm = new Vue({
  el: '#app',
  data: {
   treeData: treeData,
   show:false,
  },
  methods: {
   hideTree:function(e){
   if(e.target.id == 'app'){
    console.log(137);
    this.show = false;
   }
   }
  },
  created: function () {
   function _addOpen(data) {
   for (var i = 0; i < data.length; i++) {
    data[i]['open'] = false;
    if (data[i].child.length > 0) {
    _addOpen(data[i].child);
    }
   }
   }
   _addOpen(this.treeData);
  }
  });
 </script>

 </body>

</html>

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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