vue3的全局api - defineAsyncComponent

创建一个只有需要才加载的异步组件

import {defineAsyncComponent} from 'vue'
let asyncCom = defineAsyncComponent(()=>{
    import('./components/asyncComponent')
})
app.component('async-component',asyncCom)

局部注册

import { defineAsyncComponent } from 'vue';

createApp({
    components:{
        AsyncComponent:defineAsyncComponent(()=>{
            import('./components/asyncComponent')
        })
    }
})