The progress of Vue3 over Vue2: a more advanced route manager

Title: The progress of Vue3 relative to Vue2: a more advanced routing manager

Introduction:
With the continuous development of front-end technology, the Vue framework has gradually become the most popular front-end framework in recent years. one. As an upgraded version of Vue2, Vue3 brings many new features and improvements, including a more advanced routing manager. In this article, we will explore the advancements in route management of Vue3 compared to Vue2 and demonstrate it through code examples.

1. Vue2 routing manager
In Vue2, we usually use the vue-router library to implement routing management. This library provides a series of APIs for defining routes, handling route navigation, and rendering route components. Here is a simple example using vue-router:

<!-- App.vue -->
<template>
  <div id="app">
    <router-view></router-view>
  </div>
</template>

<!-- main.js -->
import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from './components/Home.vue'
import About from './components/About.vue'

Vue.use(VueRouter)

const router = new VueRouter({
  routes: [
    { path: '/', component: Home },
    { path: '/about', component: About }
  ]
})

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

In the above example, we use VueRouter to create a routing instance and pass it to the Vue instance. By defining the routes array, we can specify the corresponding components under different paths to switch between pages.

However, Vue2's route manager has some limitations in some aspects. For example, when we need to deal with dynamic routing or nested routing, the code becomes complex and difficult to maintain. In addition, Vue2's routing manager is not friendly enough for asynchronous components.

2. Vue3’s routing manager
Vue3 introduces a brand new routing manager library, namely vue-router@next. Compared with Vue2's routing manager, Vue3 brings some important improvements and updates, making routing management more advanced and flexible. The following is an example of using vue-router@next:

<!-- App.vue -->
<template>
  <div id="app">
    <router-view></router-view>
  </div>
</template>

<!-- main.js -->
import { createApp } from 'vue'
import { createRouter, createWebHistory } from 'vue-router'
import Home from './components/Home.vue'
import About from './components/About.vue'

const router = createRouter({
  history: createWebHistory(),
  routes: [
    { path: '/', component: Home },
    { path: '/about', component: About }
  ]
})

createApp(App)
  .use(router)
  .mount('#app')

In the above example, we use the createRouter function to create a routing instance, and use the browser's history mode for route navigation through the createWebHistory function. By defining the routes array, we can specify the corresponding components under different paths like Vue2.

However, Vue3's routing manager provides more convenience in handling dynamic routing, nested routing and asynchronous components. The following is an example of using vue-router@next to handle dynamic routing:

<!-- App.vue -->
<template>
  <div>
    <router-view :key=" $route.fullPath "></router-view>
  </div>
</template>

<!-- main.js -->
import { createApp } from 'vue'
import { createRouter, createWebHistory } from 'vue-router'
import Home from './components/Home.vue'
import About from './components/About.vue'
import User from './components/User.vue'

const router = createRouter({
  history: createWebHistory(),
  routes: [
    { path: '/', component: Home },
    { path: '/about', component: About },
    { path: '/user/:id', component: User }
  ]
})

createApp(App)
  .use(router)
  .mount('#app')

In the above example, we defined a dynamic route, namely '/user/:id'. By using the $route object within the component, we can easily obtain the parameters of the dynamic route and then load the corresponding content based on the parameters.

In addition, Vue3’s route manager also provides better asynchronous component support. We can use component: () => import('./components/About.vue') to load components on demand and improve page loading performance.

Conclusion:
Vue3 has made many advancements and improvements in the routing manager compared to Vue2, making routing management more advanced, flexible and friendly. We can implement functions such as dynamic routing, nested routing, and asynchronous components through the new vue-router@next library. This makes it easier to build complex front-end applications.

Reference materials:

• Vue Router official documentation: https://router.vuejs.org/
• Vue Router@next official documentation: https:// next.router.vuejs.org/

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