vue use file tree case-JS Tutorial-php.cn

This time I will bring you a case of vue using file tree. What are theprecautionsfor vue using file tree case. 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:

  //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 [{{open ? '-' : '+'}}] 
  //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   //增加一个+标记，单击可以增加子文件 +

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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 } } })

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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' } ] } ] } ] }

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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!