Vue3 使用 element-plus 不生效的原因之一

根据这篇 配置下来，发现还是不生效，折腾半天之后发现，由于我用了router，所以我没动最后一句“createApp(App).use(router).mount(’#app’)”，我的main.js是这么改的：

import { createApp } from vue
import App from ./App.vue
import router from ./router
import ElementPlus from element-plus;
import element-plus/lib/theme-chalk/index.css;

const app = createApp(App)
app.use(ElementPlus)
createApp(App).use(router).mount(#app)

片头所提文章是这样的：

import { createApp, Vue } from vue;
import ElementPlus from element-plus;
import element-plus/lib/theme-chalk/index.css;
import App from ./App.vue;

const app = createApp(App)
app.use(ElementPlus)
app.mount(#app)

后来发现，要这么改：

import { createApp } from vue
import App from ./App.vue
import router from ./router
import ElementPlus from element-plus;
import element-plus/lib/theme-chalk/index.css;

const app = createApp(App)
app.use(ElementPlus)
app.use(router).mount(#app)

这样的话createApp(App)才指的是一个app 改完element-plus立马生效