分别使用vue和react创建一个可伸缩的树

对前面树添加一个简单操作，点击可伸缩，对前面的代码改动了下

测试效果分别为（点击前面的+，即可伸展）

vue核心组件代码:

<template>
    <div >
        <div v-for="node in treeData">
        <span v-if="node.children" @click="handleClick(node)">+</span>
        <strong >{{node.label}}</strong>
         <vue-tree  :treeData="node.children" v-if="isKey===node.key && isshow"></vue-tree>
        </div>
    </div>
</template>

<script>
export default {
    name:'vue-tree',
    props:['treeData'],
    data(){
        return {
            isshow:false,
            isKey:''
        }
    },
    methods:{
        handleClick(node){
            this.isKey=node.key;
            console.log(this.isshow)
            this.isshow=!this.isshow;
        }
    }
}
</script>

　　测试效果代码为：

<template>
  <div>
     <vue-tree :treeData="treeData" ></vue-tree>
  </div>
</template>

<script>
import VueTree from './VueTree';
export default {
  name: 'Home',
  data () {
    return {
      isshow:false,
     treeData:[
      {label:'1',key:'1',children:[{label:'1-1',key:'11'},{label:'1-2',key:'12',children:[{label:'1-2-1',value:'121'}]}]},
      {label:'2',key:'2',children:[{label:'2-1',key:'21'}]}]
    }
  },
  components:{VueTree}
}
</script>

　　React核心组件:

import React, { Component } from 'react';
import logo from './logo.svg';
import './App.css';
const treeData=[
      {label:'1',key:'1',children:[{label:'1-1',key:'11'},{label:'1-2',key:'12'}]},
      {label:'2',key:'2',children:[{label:'2-1',key:'21'}]}]

// var isShow=true;
class App extends Component {
  constructor(props) {
    super(props);
    this.state={
      isShow:false,
      current:null
    }
    this.buildTree=this.buildTree.bind(this);
    this.collapse=this.collapse.bind(this);
  }
  buildTree(data){
    return data.map(item=>{
      if(item.children){
         return <div>
          <span onClick={this.collapse}>+<span>{item.label}</span></span> 
          <div style={{display:this.state.isShow &&this.state.current==item.label ?'block':'none'}}>{this.buildTree(item.children)}</div>
         </div> 
      }
      return (<div key={item.key} >{item.label}</div>)
      
    })
  
  }

  collapse(e){
   
    this.setState({isShow:!this.state.isShow});
    this.setState({current:e.target.children[0].innerHTML})
  }
  render() {
    return (
      <div className="App">
        <header className="App-header">
          <img src={logo} className="App-logo" alt="logo" />
          <h1 className="App-title">Welcome to React</h1>
        </header>
       {this.buildTree(treeData)}
      </div>
    );
  }
}

export default App;