Web Front-end
Vue.js
How to communicate between Vue3 components? 10+ communication methods to share
How to communicate between Vue3 components? 10+ communication methods to share
VueHow to communicate between components? The following article will share with you more than ten Vue3 component communication methods. I hope it will be helpful to you!
##This article explains the basic usage of various communication methods ofAs we all know, a very important knowledge point inVue 3.2
components, and usessingle file component<script setup> .
Vue.js is component communication. Whether it is the development of business classes or component library development, each has its own communication method. [Related recommendations: vuejs video tutorial]
- Readers who have a basic knowledge of
Vue 3
. - Readers who plan to develop component libraries.
- Props ##emits
- expose / ref
- Non-Props
- v-model
- slot
- provide / inject
- bus
- getCurrentInstance
- Vuex
- Pinia
- ##mitt.js
- I will write a simple demo for all the knowledge points listed above. The purpose of this article is to let everyone know that these methods can be used, so it does not delve into every knowledge point.
The collection (learned) is your own!
Props
Parent component passes value to child component (abbreviation: parent to child)Props Document
https:/ /v3.cn.vuejs.org/guide/component-props.html Parent component
// Parent.vue
<template>
<!-- 使用子组件 -->
<Child :msg="message" />
</template>
<script setup>
import Child from './components/Child.vue' // 引入子组件
let message = '雷猴'
</script>
Child component
// Child.vue
<template>
<div>
{{ msg }}
</div>
</template>
<script setup>
const props = defineProps({
msg: {
type: String,
default: ''
}
})
console.log(props.msg) // 在 js 里需要使用 props.xxx 的方式使用。在 html 中使用不需要 props
</script><script setup> to declare props, which has full inference and is <script setup> is available directly. For more details, please see
.https://v3.cn.vuejs.org/api/sfc-script-setup.html#defineprops-and-defineemits
at
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