<template>
  <div class="component-a">
    <!-- 一個簡單的樹形組件 -->
    <tree :treeData="treeData"></tree>
  </div>
</template>
<script>
export default {
    name: 'component-a',
    data() {
      return {
        treeData: [{
          title: '樹形標(biāo)題一',
          expand: true,
          children: [{
            title: '子標(biāo)題1',
            expand: true
          },
          {
            title: '子標(biāo)題2',
            expand: true,
            children: [{
              title: '子標(biāo)題2.1',
              expand: true
            },
            {
              title: '子標(biāo)題2.2',
              expand: true
            },
            {
              title: '子標(biāo)題2.3',
              expand: true
            }]
          }]
      }
    },
    components: {
      // 自定義組件
      tree: {
        // 組件的名稱
        name: 'tree',
        // 模板
        template: ` 
            <ul>
               <li v-for="item in treeData">
                 <span>{{item.title}}</span>
             <!-- 在組件內(nèi)部調(diào)用自己 -->
                 <tree v-if="item.children" :treeData="item.children"></tree >
               </li>
            </ul>`,
        // 通過父組件傳遞的數(shù)據(jù)
        props: ['treeData']
      }
    },
    methods: {}
  }
</script>

this.$options.name