关于vue3:vue3x-使用-globalProperties-全局变量

Vue3.x 用 Composition API 中是没有 this 的，所以不能间接应用 this 调用 globalProperties 全局变量

Composition API 应用办法

// main.js
import {createApp} from 'vue'
import App from './App.vue'
import storage from './plugins/storage'

const app = createApp(App);
app.config.globalProperties.$storage = storage
app.provide('$storage', storage)
app.mount('#app')

// Home.vue
import {inject} from "vue"
const storage = inject('$storage')
storage.setItme('name','zhangsan')

Vue2.x 的应用办法

// main.js
import {createApp} from 'vue'
import App from './App.vue'
import storage from './plugins/storage'

const app = createApp(App);
app.config.globalProperties.$storage = storage
app.mount('#app')

// Home.vue
this.$storage.setItme('name','zhangsan')