usemitt//globallyimportnpminstallmittorcnpminstallmittmountinmainfileimport{createApp}from'vue'importAppfrom'./App.vue'importmittfrom'mitt'//importmittconstapp=createApp(App)app.config.globalProperties.$mitt=newmitt()//mitt挂载到vue3中的全局app.mount('#app')component1withimttPassvaluebyemitComponent2关于For传值内容父子组件之间，请看另一篇文章：vue3语法糖+ts组件传值
