Question

im使用vue.js创建一个小型站点，尝试安装vue-router（到目前为止还没有成功）。即时通讯收到“无法重新定义属性：$ router”错误。这是我的代码。 App.Vue

<div id="app">
<div class="header">
  <div class="tab">
    <router-link to="/page1">page1</router-link>
  </div>
  <div class="tab">
    <router-link to="/page2">page2</router-link>
  </div>
  <div class="tab">
    <router-link to="/page3">page3</router-link>
  </div>
  <div class="tab">
    <router-link to="/page4">page4</router-link>
  </div>
</div>
<div>
  <router-view></router-view>
</div>

Page1.vue

 <template>
    <div>
        <h3>sup</h3>
    </div>
  </template>
  <script>
    export default {
      name: 'app',
      data () {
        return {
          msg: 'hello world'
        }
      }
    }
  </script>
  <style>

  </style>

main.js

import Vue from 'vue'
import App from './App.vue'
import VueRouter from 'vue-router'
Vue.use(VueRouter)
new Vue({
  el: '#app',
  render: h => h(App)
})
const Page1 = { template: '<div>Page1</div>' }
const Page2 = { template: '<div>Page2</div>' }

const routes = [
  { path: '/page1', component: Page1 },
  { path: '/page2', component: Page1 }
]

const router = new VueRouter({
  routes // short for `routes: routes`
})

const app = new Vue({
  router
}).$mount('#app')

index.html

<!DOCTYPE html>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>hello-world</title>
  </head>
  <body>
    <div id="app"></div>
    <script src="/dist/build.js"></script>
  </body>
</html>

ive之前曾与vue-router合作，并遇到了这个问题。我觉得自己缺少了一些东西，但我不知道该怎么办，将不胜感激

Answer 1

您的主要Vue实例已复制：

new Vue({
  el: '#app',
  render: h => h(App)
})

和：

const app = new Vue({
  router
}).$mount('#app')

我认为这是问题的根源。我想它看起来像这样：

import Vue from 'vue'
import App from './App.vue'
import VueRouter from 'vue-router'
Vue.use(VueRouter)

const Page1 = { template: '<div>Page1</div>' }
const Page2 = { template: '<div>Page2</div>' }

const routes = [
  { path: '/page1', component: Page1 },
  { path: '/page2', component: Page1 }
]

const router = new VueRouter({
  routes // short for `routes: routes`
})

const app = new Vue({
  router,
  render: h => h(App)
}).$mount('#app')

Answer 2

您有重复的Vue实例。

检查。

import Vue from 'vue'
import App from './App.vue'
import VueRouter from 'vue-router'
Vue.use(VueRouter)

const Page1 = { template: '<div>Page1</div>' }
const Page2 = { template: '<div>Page2</div>' }

const routes = [
  { path: '/page1', component: Page1 },
  { path: '/page2', component: Page1 }
]

const router = new VueRouter({
  routes // short for `routes: routes`
})

const app = new Vue({
  router,
  render: h => h(App)
}).$mount('#app')

Vue路由器返回“无法重新定义属性：$ router”错误

2 个答案: