vue實現樹形菜單效果

來源：懂視網責編：小OO 時間：2020-11-27 19:44:27

vue實現樹形菜單效果

本文實例為大家分享了vue實現樹形菜單效果展示的具體代碼，供大家參考，具體內容如下：<；，"；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。

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導讀本文實例為大家分享了vue實現樹形菜單效果展示的具體代碼，供大家參考，具體內容如下：<；，"；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。

這篇文章主要為大家詳細介紹了vue實現樹形菜單效果，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實現樹形菜單效果展示的具體代碼，供大家參考，具體內容如下

<!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>

 <p 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> 
 </p>


 <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"},{"id":3101,"pid":367,"city":"五華區"},{"id":3102,"pid":367,"city":"官渡區"},{"id":3103,"pid":367,"city":"西山區"},{"id":3104,"pid":367,"city":"東川區"},{"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":"麒麟區"},{"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>

上面是我整理給大家的，希望今后會對大家有幫助。

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