Vue Router 4: Basic Setup and Programmatic Navigation

<!-- main.js (or main.ts) -->
import { createApp } from 'vue';
import App from './App.vue';
import router from './router'; // Import the router instance

const app = createApp(App);

app.use(router); // Use the router plugin

app.mount('#app');

<!-- router/index.js -->
import { createRouter, createWebHistory } from 'vue-router';
import Home from '../views/Home.vue';
import About from '../views/About.vue';
import UserProfile from '../views/UserProfile.vue';

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Home
  },
  {
    path: '/about',
    name: 'About',
    component: About
  },
  {
    path: '/user/:id',
    name: 'UserProfile',
    component: UserProfile,
    props: true // Pass route params as props to the component
  },
  {
    path: '/dashboard',
    name: 'Dashboard',
    // Route for programmatic navigation example
    component: () => import('../views/Dashboard.vue') // Lazy load
  }
];

const router = createRouter({
  history: createWebHistory(),
  routes
});

export default router;

<!-- App.vue -->
<template>
  <nav>
    <router-link to="/">Home</router-link> |
    <router-link to="/about">About</router-link> |
    <router-link to="/user/123">User 123</router-link> |
    <router-link to="/dashboard">Dashboard</router-link>
  </nav>
  <router-view />
</template>

<script setup>
// No script logic needed for App.vue in this example
</script>

<!-- views/Home.vue -->
<template>
  <div>
    <h2>Home View</h2>
    <p>Welcome to the home page!</p>
  </div>
</template>

<script setup>
// ...
</script>

<!-- views/About.vue -->
<template>
  <div>
    <h2>About View</h2>
    <p>This is the about page.</p>
  </div>
</template>

<script setup>
// ...
</script>

<!-- views/UserProfile.vue -->
<template>
  <div>
    <h2>User Profile</h2>
    <p>User ID: {{ id }}</p>
    <button @click="goToHome">Go to Home Programmatically</button>
  </div>
</template>

<script setup>
import { useRouter, useRoute } from 'vue-router';
import { defineProps } from 'vue';

// Access route parameters via props (if props: true is set in route config)
const props = defineProps({
  id: String
});

// Access router instance for programmatic navigation
const router = useRouter();

const goToHome = () => {
  router.push('/'); // Navigate to home route
};

// Also possible to access route info directly
const route = useRoute();
console.log('Current route name:', route.name);
</script>

<!-- views/Dashboard.vue -->
<template>
  <div>
    <h2>Dashboard View</h2>
    <p>Welcome to your dashboard!</p>
    <button @click="goToUserProgrammatically">Go to User 456</button>
  </div>
</template>

<script setup>
import { useRouter } from 'vue-router';

const router = useRouter();

const goToUserProgrammatically = () => {
  router.push({ name: 'UserProfile', params: { id: '456' } });
};
</script>