Route parameters with useRoute in Vue - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of useRoute in Vue Router?

useRoute is a function that lets you access the current route object inside a Vue component. It helps you read route details like parameters, query strings, and path.

beginner

How do you access a route parameter named id using useRoute?

<p>First, import <code>useRoute</code> from <code>vue-router</code>. Then call it inside your component to get the route object. Access the parameter with <code>route.params.id</code>.</p>

intermediate

Why should you use useRoute instead of this.$route in Vue 3 Composition API?

<p><code>useRoute</code> works with the Composition API and lets you access route info reactively inside setup functions. <code>this.$route</code> is for Options API and class components.</p>

intermediate

What happens if the route parameter changes while the component is active when using useRoute?

The route object from useRoute is reactive. So if the parameter changes, your component can react to the new value automatically.

beginner

Show a simple example of using useRoute to display a route parameter userId in a Vue component.

<pre>import { useRoute } from 'vue-router'
import { computed } from 'vue'

export default {
  setup() {
    const route = useRoute()
    const userId = computed(() => route.params.userId)
    return { userId }
  }
}</pre><p>This displays the current <code>userId</code> from the URL.</p>

What does useRoute return in a Vue component?

A The current route object with parameters and query

B A function to change the route

C The router instance

D A boolean indicating if the route is active

useRoute returns the current route object, which includes params, query, and path info.

How do you import useRoute in a Vue 3 component?

A import { useRoute } from 'vue'

B import { useRoute } from 'vue-router'

C import useRoute from 'vue'

D import { useRoute } from 'vuex'

You import useRoute from the vue-router package.

If your route is defined as /user/:id, how do you get the id inside setup()?

A route.query.id

B route.id

C route.path.id

D route.params.id

Route parameters are accessed via route.params.

What happens if the route parameter changes while using useRoute?

A The route object updates reactively

B The component reloads automatically

C Nothing changes until page refresh

D An error is thrown

The route object from useRoute is reactive and updates automatically.

Which Vue API style is useRoute designed for?

A Template-only API

B Options API

C Composition API

D Class API

useRoute is designed for the Composition API in Vue 3.

Explain how to access and use route parameters inside a Vue 3 component using useRoute.

Think about how to get the current route and read its params reactively.

Describe why useRoute is preferred over this.$route in Vue 3 Composition API.

Consider the differences between Options API and Composition API.