mitt在vue3中的多种使用方式

使用方式1

安装mitt

pnpm

pnpm i mitt

npm

npm i mitt

yarn

yarn add mitt 

在main.ts文件中导入mitt

import mitt from "mitt";

//...
const app = createApp(App);
app.config.globalProperties.Bus = mitt();
app.mount("#app");

在.vue文件中使用

<script setup lang="ts">
import {ComponentInternalInstance} from "vue";
const {Bus} = (getCurrentInstance() as ComponentInternalInstance).appContext.config.globalProperties;
    
const emitEvent = () => {
    Bus.emit("eventName"); // 触发的事件名称
}
</script>

<template>
  <button @click="emitEvent">触发事件</button>
</template>

<script setup lang="ts">
import {ComponentInternalInstance} from "vue";
const {Bus} = (getCurrentInstance() as ComponentInternalInstance).appContext.config.globalProperties;
    
// 触发的事件名称
Bus.on("eventName",() => {
    // 做些什么
}); 

</script>