Home > Web Front-end > JS Tutorial > How to use vue file tree component

How to use vue file tree component

php中世界最好的语言
Release: 2018-05-26 10:44:50
Original
1348 people have browsed it

This time I will show you how to use the vue file tree component, and what are the precautions when using the vue file tree component. The following is a practical case, let's take a look.

This article mainly analyzes the file tree component in the vue official warehouse [vue github]

The demo can be viewedhttps://codepen.io/shayminsky21/pen/xXwxgm

First is the html template:

<li>
  <p
   //文件夹加粗表示
   :class="{bold: isFolder}" 
   //处理单击事件 打开闭合文件列表            
   @click="toggle"  
   //处理双击事件 双击子文件,子文件属性变为文件夹               
   @dblclick="changeType">  
   //显示文件名      
   {{model.name}}
  //若是文件夹的话则显示[+]来控制文件夹的开关闭合
   <span v-if="isFolder">[{{open ? '-' : '+'}}]</span>
  </p>
  <ul v-show="open" v-if="isFolder">
  //利用v-for显示子文件列表,通过递归使用item组件来完成文件树
   <item
   class="item"
   v-for="model in model.children"
   :model="model">
   </item>
   //增加一个+标记,单击可以增加子文件
   <li class="add" @click="addChild">+</li>
  </ul>
</li>
Copy after login

Next is the source code of the component part:

Vue.component('item', {
 template: '#item-template',
 props: {
 model: Object //将文件数据通过props传入
 },
 data: function () {
 return {
  open: false  //open表示文件夹闭合状态
 }
 },
 computed: {
 isFolder: function () {
  return this.model.children &&
  this.model.children.length
 }
 }, //计算对象是否有子节点并且子节点数大于0来判断是否是文件夹
 methods: {
 toggle: function () {
  if (this.isFolder) {
  this.open = !this.open
  }
 },    //控制文件夹闭合的方法 单击触发改变open
 changeType: function () {
  if (!this.isFolder) {
  Vue.set(this.model, 'children', [])
  this.addChild()
  this.open = true
  }
 }, //双击触发,通过给文件增加子节点来使文件属性变成文件夹
 addChild: function () {
  this.model.children.push({
  name: 'new stuff'
  })  //点击文件夹里的+节点触发 为文件夹添加一个新文件
 }   
 }
})
Copy after login

So the design idea is to determine whether the object has child nodes to determine whether it is a folder or file, and then recursively reuse the component to display the effect of the file tree.

The last is the data format of the incoming component:

var data = {
 name: 'My Tree',
 children: [
 { name: 'hello' },
 { name: 'wat' },
 {
  name: 'child folder',
  children: [
  {
   name: 'child folder',
   children: [
   { name: 'hello' },
   { name: 'wat' }
   ]
  },
  { name: 'hello' },
  { name: 'wat' },
  {
   name: 'child folder',
   children: [
   { name: 'hello' },
   { name: 'wat' }
   ]
  }
  ]
 }
 ]
}
Copy after login

You can continue to expand the function and display effect of the file tree based on this basic structure.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

How to make js convert the key value string into a json string

How to use angular4 in Data communication among multiple components

The above is the detailed content of How to use vue file tree component. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template