关于javascript:Vue3-全局挂在方法和属性

第一步

import { createApp } from 'vue'import App from './App.vue';const app = createApp(App);app.config.globalProperties.foo = 'bar'app.config.globalProperties.test = 'bar'app.mount('#app')

第二步

创立useCurrentInstance.ts文件

import { ComponentInternalInstance, getCurrentInstance } from 'vue'export default function useCurrentInstance() {    const { appContext } = getCurrentInstance() as ComponentInternalInstance    const ctx = appContext.config.globalProperties;    return {        ctx    }}

第三步

import useCurrentInstance from "../useCurrentInstance";//依据本人创立的门路引入setup: () => {    const { ctx } = useCurrentInstance();    const getFoo = () => {      console.log(ctx) //{foo: "bar" test: "bar"}          }    return {getFoo }  }