vnode

获取vnode对象

  • vm.$slots对象下的所有值
  • vm.$scopedSlots对象的值返回一个函数,该函数执行后返回vnode对象
  • directives自定义指令中钩子函数的参数3和参数4,例如钩子函数bind:bind: function (el, binding, vnode, oldVnode) { ... )
  • render渲染函数的参数1是一个返回vnode的函数,例如这里的参数h:render: function (h) { ... }
  • 函数式组件context.children返回一个vnode数组
  • 函数式组件context.slots返回一个函数,该函数运行后返回一个vnode组成的对象

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vnode构造函数传参

tag?: string,

data?: VNodeData,

children?: ?Array,

text?: string,

elm?: Node,

context?: Component,

  • 函数式组件和普通组件中该值不同

componentOptions?: VNodeComponentOptions,

asyncFactory?: Function

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vnode对象的属性

this.tag = tag

this.data = data

  • 包含以下
    • attrs
    • class:通过v-bind绑定在组件上的class,格式和v-bind相同
    • staticClass:通过字符串绑定在组件上的class
    • hook
    • model
    • on
    • props
    • staticStyle:原生样式对象,通过v-bind绑定到style上的这里也会体现
    • style:通过v-bind绑定到组件上的对象

this.children = children

  • 当表单项插入el-form时,该值为undefined

this.text = text

this.elm = elm

this.ns = undefined

this.context = context

  • rendered in this component's scope(在此组件的范围内呈现)

this.fnContext = undefined

  • real context vm for functional nodes(功能节点的实上下文虚拟机)

this.fnOptions = undefined

  • for SSR caching(用于SSR缓存)

this.fnScopeId = undefined

  • functional scope id support(功能范围ID支持)

this.key = data && data.key

this.componentOptions = componentOptions

this.componentInstance = undefined

  • component instance(组件实例)

this.parent = undefined

  • component placeholder node(组件占位符节点)

this.raw = false

  • contains raw HTML? (server only)(包含原始HTML)

this.isStatic = false

  • hoisted static node(吊装静节点)

this.isRootInsert = true

  • necessary for enter transition check(输入转换检查所必需的)

this.isComment = false

  • empty comment placeholder?(空注释占位符)

this.isCloned = false

  • is a cloned node?(是克隆的节点)

this.isOnce = false

  • is a v-once node?

this.asyncFactory = asyncFactory

  • async component factory function(异步组件工厂函数)

this.asyncMeta = undefined

this.isAsyncPlaceholder = false

原文地址:https://www.cnblogs.com/qq3279338858/p/11287888.html