vue实现树形菜单效果

2019-11-19 14:08:26

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来源：转载

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本文实例为大家分享了vue实现树形菜单效果展示的具体代码，供大家参考，具体内容如下

<!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">点我</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":"绵阳"},{"id":324,"pid":26,"city":"阿坝"},{"id":325,"pid":26,"city":"巴中"},{"id":326,"pid":26,"city":"达州"},{"id":327,"pid":26,"city":"德阳"},{"id":328,"pid":26,"city":"甘孜"},{"id":329,"pid":26,"city":"广安"},{"id":330,"pid":26,"city":"广元"},{"id":331,"pid":26,"city":"乐山"},{"id":332,"pid":26,"city":"凉山"},{"id":333,"pid":26,"city":"眉山"},{"id":334,"pid":26,"city":"南充"},{"id":335,"pid":26,"city":"内江"},{"id":336,"pid":26,"city":"攀枝花"},{"id":337,"pid":26,"city":"遂宁"},{"id":338,"pid":26,"city":"雅安"},{"id":339,"pid":26,"city":"宜宾"},{"id":340,"pid":26,"city":"资阳"},{"id":341,"pid":26,"city":"自贡"},{"id":342,"pid":26,"city":"泸州"},{"id":367,"pid":30,"city":"昆明"},{"id":378,"pid":30,"city":"曲靖"},{"id":3100,"pid":367,"city":"盘龙区"},{"id":3101,"pid":367,"city":"五华区"},{"id":3102,"pid":367,"city":"官渡区"},{"id":3103,"pid":367,"city":"西山区"},{"id":3104,"pid":367,"city":"东川区"},{"id":3105,"pid":367,"city":"安宁市"},{"id":3106,"pid":367,"city":"呈贡县"},{"id":3107,"pid":367,"city":"晋宁县"},{"id":3108,"pid":367,"city":"富民县"},{"id":3109,"pid":367,"city":"宜良县"},{"id":3110,"pid":367,"city":"嵩明县"},{"id":3111,"pid":367,"city":"石林县"},{"id":3112,"pid":367,"city":"禄劝"},{"id":3113,"pid":367,"city":"寻甸"},{"id":3189,"pid":378,"city":"麒麟区"},{"id":3190,"pid":378,"city":"宣威市"},{"id":3191,"pid":378,"city":"马龙县"},{"id":3192,"pid":378,"city":"陆良县"},{"id":3193,"pid":378,"city":"师宗县"},{"id":3194,"pid":378,"city":"罗平县"},{"id":3195,"pid":378,"city":"富源县"},{"id":3196,"pid":378,"city":"会泽县"},{"id":3197,"pid":378,"city":"沾益县"}];  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>

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