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vue 动态组件用于实现在指定位置上,动态加载不同的组件,核心代码为:
<component :is="componentTag"></component>
- data() {
- return {
- componentTag: '',
- }
- }
componentTag 为自定义的变量,将需要加载的组件名赋值给它,即可在<component />标签出现的位置,渲染该组件。
- <template>
- <div style="padding: 30px">
- <button @click="change('1')">组件1</button>
- <button @click="change('2')">组件2</button>
- <button @click="change('3')">组件3</button>
- <component :is="componentTag"></component>
- </div>
- </template>
- <script>
- import component1 from './component1'
- import component2 from './component2'
- import component3 from './component3'
- export default {
- components: {component1, component2, component3},
- data() {
- return {
- componentTag: '',
- }
- },
- methods: {
- change(index) {
- this.componentTag = 'component' + index
- },
- }
- }
- </script>
- <style scoped>
- </style>
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src/page/component1.vue
- <template>
- <div>
- <h3>组件1—文字</h3>
- <span>我爱你,中国!</span>
- </div>
- </template>
- <script>
- export default {
- name: "component1"
- }
- </script>
- <style scoped>
- </style>
src/page/component2.vue
- <template>
- <div>
- <h3>组件2-图片</h3>
- <img src="https://ss2.bdstatic.com/70cFvnSh.jpg" alt="">
- </div>
- </template>
- <script>
- export default {
- name: "component2"
- }
- </script>
- <style scoped>
- </style>
src/page/component3.vue
- <template>
- <div>
- <h3>组件3—输入框</h3>
- <input type="text">
- </div>
- </template>
- <script>
- export default {
- name: "component3"
- }
- </script>
- <style scoped>
- </style>
以上原文链接:vue 动态组件【详解】component :is_朝阳39的博客-CSDN博客_component is
<component :is="detailComponentName" />
- import components from './components'
-
- export default {
- components: {
- ...components
- }
- }
src/components/index.js
- const ctx = require.context('./common', false, /\.vue$/)
- const components = {}
- console.log(ctx, 'ctx---打印出./common文件下(不包含子文件夹),以.vue结尾的文件')
-
- console.log(
- ctx.keys(),
- 'ctx.keys()---返回./common文件下(不包含子文件夹),以.vue结尾的文件的数组'
- )
- for (const key of ctx.keys()) {
- // 剥去文件名开头的 `./` 和`.vue`结尾的扩展名
- const module = key.replace(/^\.\//, '').replace(/\.vue$/, '')
- components[module] = ctx(key).default
-
- console.log(module, 'module---去掉`./`开头 和`.vue`结尾后的文件名')
-
- console.log(
- components[module],
- 'components[module]---拿到ctx文件(包括html和default)'
- )
- }
- console.log(components, 'components---这些ctx文件集合')
- export default components
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此处解释该index.js文件:
require.context( directory, useSubdirectories, regExp )
require.context('./', false, /\.vue$/) 检索components文件下的文件,不检索子文件夹,匹配以.vue结尾的文件。
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