title: Use Vue Router Library for Production Applications impact: LOW impactDescription: Simple hash routing lacks essential features for production SPAs; Vue Router provides navigation guards, lazy loading, and proper history management type: best-practice tags: [vue3, vue-router, spa, production, architecture]

Use Vue Router Library for Production Applications

Impact: LOW - While you can implement basic routing with hash changes and dynamic components, the official Vue Router library should be used for any production single-page application. It provides essential features like navigation guards, nested routes, lazy loading, and proper browser history integration that are tedious and error-prone to implement manually.

Task Checklist

• Install Vue Router for production SPAs
• Use simple routing only for learning or tiny prototypes
• Leverage built-in features: guards, lazy loading, meta fields
• Consider router-based state and data loading patterns

When Simple Routing is Acceptable

<!-- Only for: learning, prototypes, or micro-apps with 2-3 pages -->
<script setup>
import { ref, computed } from 'vue'
import Home from './Home.vue'
import About from './About.vue'

const routes = { '/': Home, '/about': About }
const currentPath = ref(window.location.hash.slice(1) || '/')

window.addEventListener('hashchange', () => {
  currentPath.value = window.location.hash.slice(1) || '/'
})

const currentView = computed(() => routes[currentPath.value])
</script>

<template>
  <nav>
    <a href="#/">Home</a>
    <a href="#/about">About</a>
  </nav>
  <component :is="currentView" />
</template>

Why Vue Router for Production

Features You'd Have to Implement Manually

Production Setup with Vue Router

// router/index.js
import { createRouter, createWebHistory } from 'vue-router'

const routes = [
  {
    path: '/',
    name: 'Home',
    component: () => import('@/views/Home.vue'),  // Lazy loaded
    meta: { requiresAuth: false }
  },
  {
    path: '/dashboard',
    name: 'Dashboard',
    component: () => import('@/views/Dashboard.vue'),
    meta: { requiresAuth: true },
    children: [
      {
        path: 'settings',
        name: 'Settings',
        component: () => import('@/views/Settings.vue')
      }
    ]
  },
  {
    path: '/users/:id',
    name: 'UserProfile',
    component: () => import('@/views/UserProfile.vue'),
    props: true  // Pass params as props
  },
  {
    path: '/:pathMatch(.*)*',
    name: 'NotFound',
    component: () => import('@/views/NotFound.vue')
  }
]

const router = createRouter({
  history: createWebHistory(),
  routes,
  scrollBehavior(to, from, savedPosition) {
    return savedPosition || { top: 0 }
  }
})

// Global navigation guard
router.beforeEach((to, from) => {
  if (to.meta.requiresAuth && !isAuthenticated()) {
    return { name: 'Login', query: { redirect: to.fullPath } }
  }
})

export default router

// main.js
import { createApp } from 'vue'
import App from './App.vue'
import router from './router'

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

<!-- App.vue -->
<template>
  <nav>
    <router-link to="/">Home</router-link>
    <router-link to="/dashboard">Dashboard</router-link>
  </nav>

  <router-view v-slot="{ Component }">
    <transition name="fade" mode="out-in">
      <component :is="Component" />
    </transition>
  </router-view>
</template>

Modern Vue Router Features (2025+)

// Data Loading API (Vue Router 4.2+)
const routes = [
  {
    path: '/users/:id',
    component: UserProfile,
    // Load data at route level
    loader: async (route) => {
      return { user: await fetchUser(route.params.id) }
    }
  }
]

// View Transitions API integration
const router = createRouter({
  // Enable native browser view transitions
  // Requires browser support (Chrome 111+)
})

Key Points

1. Use Vue Router for any app beyond a prototype - The features are essential
2. Simple routing is for learning - Understand the concepts, then use the library
3. Lazy loading is critical for bundle size - Vue Router makes it trivial
4. Navigation guards prevent security issues - Hard to get right manually
5. History mode requires Vue Router - Clean URLs need proper handling
6. New features keep coming - Data Loading API, View Transitions

Reference

• Vue.js Routing Guide
• Vue Router Documentation
• Vue Router Getting Started