Étapes pour implémenter le menu arborescent dans vue-js tutoriel-php.cn

Étapes pour implémenter le menu arborescent dans vue

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Libérer： 2018-05-10 11:25:49

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Cette fois, je vais vous apporter les instructions étape par étape pour implémenter un menu arborescent dans Vue. Quelles sont les précautions pour implémenter un menu arborescent dans Vue Voici un cas pratique, prenons. un regard.

<!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" rel="external nofollow" >
    <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=&#39;app&#39; @click=&#39;hideTree($event)&#39;>
      <button @click.stop="show = !show">点我</button>
      <transition enter-active-class="animated fadeInLeft" leave-active-class="animated fadeOutLeft">
        <item v-bind:tree=&#39;treeData&#39; id=&#39;tree&#39; v-if="show"></item> 
      </transition>  
    </p>
    <template id=&#39;tree-template&#39;>
      <ul>
        <li v-for=&#39;(v,i) in tree&#39;>  
          <span v-if="isFolder(v)" @click="toggle(i)">{{ tree[i].open ? '-' : '+' }}</span>
          <a data-id="v.id">{{v.city}}</a>  
          <item v-bind:tree=&#39;v.child&#39; 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(&#39;item&#39;, {
        template: &#39;#tree-template&#39;,
        props: [&#39;tree&#39;],
        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: &#39;#app&#39;,
        data: {
          treeData: treeData,
          show:false,
        },
        methods: {
          hideTree:function(e){
            if(e.target.id == &#39;app&#39;){
              console.log(137);
              this.show = false;
            }
          }
        },
        created: function () {
          function _addOpen(data) {
            for (var i = 0; i < data.length; i++) {
              data[i][&#39;open&#39;] = false;
              if (data[i].child.length > 0) {
                _addOpen(data[i].child);
              }
            }
          }
          _addOpen(this.treeData);
        }
      });
    </script>
  </body>
</html>

Copier après la connexion

Je pense que vous maîtrisez la méthode après avoir lu le cas dans cet article. Pour des informations plus intéressantes, veuillez prêter attention aux autres articles connexes sur le site Web chinois de php !

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