Question

某些组件无法注入到App.vue模板中。特别是Login.vue是引起问题的那个。如果我在服务器运行（npm run dev）时从头开始创建它，它将起作用，但是一旦重新启动并导航到Login组件，它将无法加载。

堆栈跟踪

[Vue warn]: Failed to mount component: template or render function not defined.

found in

---> <Login>
       <App> at src/App.vue
         <Root>

src / components / Login.vue

<template>
  <div id="login">
    <ul>
      <li><input type="text" v-model="username" placeholder="Username"></li>
      <li><input type="password" v-model="password" placeholder="Password"></li>
      <li><button @click="login(username, password)">Login</button></li>
    </ul>
  </div>
</template>

<script>
</script>

<style scoped>

#login{
  padding-top: 100px;
}

ul {
  list-style-type: none;
  padding: 0;
}

li {
  display: inline-block;
  margin: 0 10px;
}

</style>

src / router / index.js

import Vue from 'vue'
import Router from 'vue-router'
import Hello from '@/components/Hello'
import RideSharing from '@/components/RideSharing'
import Login from '@/components/Login'
import About from '@/components/About'

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/',
      name: 'Hello',
      component: Hello
    },
    {
      path: '/app',
      name: 'RideSharing',
      component: RideSharing
    },
    {
      path: '/app/login',
      name: 'Login',
      component: Login
    },
    {
      path: '/app/about',
      name: 'About',
      component: About
    }
  ]
})

src / App.vue

<template>
  <div id="app" :style="{padding: $route.path === '/' ? '172px' : '10px'}">
    <div>
      <img src="./assets/logo4.png" align="center">
    </div>
    <router-view></router-view>
  </div>
</template>

<script>
export default {
  name: 'app'
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  background-color: hsla(269, 96%, 50%, 0.73);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 0px;
  height: inherit;
}

body{
  height: inherit;
}

html{
  height: 100%;
}
</style>

src / main.js

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import BootstrapVue from "bootstrap-vue"
import App from './App'
import router from './router'
import 'bootstrap/dist/css/bootstrap.min.css'
import 'bootstrap-vue/dist/bootstrap-vue.css'

Vue.use(BootstrapVue)
Vue.config.productionTip = false

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  template: '<App/>',
  components: { App }
})

Answer 1

如果您使用的是Vue的完整版，则可以尝试使用.$mount('#app')

挂载DOM模板。

因此，在main.js中，您的应用程序脚本应如下所示：

new Vue({
  router,
  template: '<App/>',
  components: { App },
}).$mount('#app')

Answer 2

解决方案：

在导入中缺少.vue个扩展名。

src / router / index.js

import Vue from 'vue'
import Router from 'vue-router'
import Hello from '@/components/Hello.vue'
import RideSharing from '@/components/RideSharing.vue'
import Login from '@/components/Login.vue'
import About from '@/components/About.vue'

Vue-无法呈现组件

2 个答案: