Router in Vue.js and the role of Vue Router?

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Today’s content: Routing (router) in Vue.js and the role of Vue Router?

Routing (Router) in Vue.js and the role of Vue Router

Overview

In Vue.js, routing is the mechanism used to manage page navigation and view switching. Vue Router is a routing management library officially provided by Vue.js. It allows developers to define front-end routing in a declarative manner to achieve page switching and navigation in single page applications (SPA).

Basic usage of Vue Router

1. Install Vue Router:

   npm install vue-router
   

2. Use Vue Router:

   // main.js
   import Vue from 'vue';
   import VueRouter from 'vue-router';
   import App from './App.vue';
   
   Vue.use(VueRouter);
   
   const routes = [
     {<!-- --> path: '/', component: Home },
     {<!-- --> path: '/about', component: About },
     {<!-- --> path: '/contact', component: Contact }
   ];
   
   const router = new VueRouter({<!-- -->
     routes
   });
   
   new Vue({<!-- -->
     el: '#app',
     router,
     render: h => h(App)
   });
   

3. Define routing components:

   // Home.vue
   <template>
     <div>
       <h2>Home Page</h2>
     </div>
   </template>
   
   <script>
   export default {<!-- -->
     // component definition
   };
   </script>
   

   Define About.vue and Contact.vue in the same way.

4. Use to display components:

   <!-- App.vue -->
   <template>
     <div id="app">
       <router-view></router-view>
     </div>
   </template>
   
   <script>
   export default {<!-- -->
     // component definition
   };
   </script>
   

The role of Vue Router

1. Page navigation:

   Vue Router allows you to define different routes, each route corresponds to a component, and navigation between pages is achieved by switching routes.

2. Nested routes:

   The nested structure of the page can be realized by nesting routes. Each route can have its own sub-routes and corresponding components.

3. Route parameters:

   Vue Router supports defining parameters in routes, through which data can be dynamically passed to components.

   // Route definition
   {<!-- --> path: '/user/:id', component: User }
   

   // User.vue
   export default {<!-- -->
     props: ['id'],
     // component definition
   };
   

4. Navigation Guard:

   Vue Router provides a navigation guard (Navigation Guards) mechanism to allow additional control during navigation.

   // Route guard
   router.beforeEach((to, from, next) => {<!-- -->
     // Verify whether the user is logged in and other logic
     next();
   });
   

5. Status Management:

   Vue Router can be used in conjunction with state management libraries (such as Vuex) to implement more complex state management and ensure state consistency when routing is switched.

6. HTML5 History mode:

   Vue Router supports the use of HTML5 History API. Through configuration, you can remove the # symbol in the URL to make the URL more beautiful.

const router = new VueRouter({<!-- -->
  mode: 'history',
  routes
});

Overall, Vue Router provides powerful routing management functions in Vue.js applications, making the development of single-page applications more flexible and maintainable. Through the combination of declarative routing configuration and components, Vue Router encourages developers to organize code in a modular manner, improving the readability and maintainability of applications.

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Review of this article

• ? Column introduction
• Routing (Router) in Vue.js and the role of Vue Router
• • • Overview
    • Basic usage of Vue Router
    • The role of Vue Router
• ?Write at the end