RouterView for rendering in Vue - Step-by-Step Execution

Concept Flow - RouterView for rendering

Start Vue App

↓

RouterView tag found

↓

Check current route

↓

Match route component

↓

Render matched component inside RouterView

↓

Display component content

↓

Wait for route change

↩Back to Check current route

RouterView acts like a placeholder that shows the component matching the current route. When the route changes, RouterView updates to render the new component.

Execution Sample

Vue

<template>
  <RouterView />
</template>

This code renders the component matched by the current route inside the RouterView placeholder.

Execution Table

Step	Action	Current Route	Component Rendered	Output
1	App starts, RouterView found	/	HomeComponent	Home page content shown
2	User clicks link to /about	/about	AboutComponent	About page content shown
3	User clicks link to /contact	/contact	ContactComponent	Contact page content shown
4	User clicks link to /unknown	/unknown	NotFoundComponent	404 page content shown
5	No more route changes	/unknown	NotFoundComponent	Page stays on 404 content

💡 Execution stops when user stops changing routes; RouterView shows component matching current route.

Variable Tracker

Variable	Start	After 1	After 2	After 3	After 4	Final
currentRoute	/	/about	/contact	/unknown	/unknown	/unknown
renderedComponent	HomeComponent	AboutComponent	ContactComponent	NotFoundComponent	NotFoundComponent	NotFoundComponent

Key Moments - 2 Insights

Why does RouterView change what it shows when the route changes?

RouterView listens to the current route. When the route changes (see execution_table steps 2-4), it renders the component linked to that route automatically.

What happens if the route does not match any defined component?

RouterView renders a fallback component like NotFoundComponent (step 4) to show a 404 page, so the user knows the page doesn't exist.

Visual Quiz - 3 Questions

Look at the execution table, what component is rendered at step 3?

A AboutComponent

B ContactComponent

C HomeComponent

D NotFoundComponent

💡 Hint

Check the 'Component Rendered' column at step 3 in the execution_table.

At which step does the RouterView render the NotFoundComponent?

A Step 4

B Step 3

C Step 2

D Step 5

💡 Hint

Look for 'NotFoundComponent' in the 'Component Rendered' column in execution_table.

If the user never changes route, what component does RouterView show?

A AboutComponent

B ContactComponent

C HomeComponent

D NotFoundComponent

💡 Hint

Check the 'renderedComponent' variable at 'Start' in variable_tracker.

Concept Snapshot

RouterView is a Vue component that acts as a placeholder.
It renders the component matching the current route.
When the route changes, RouterView updates automatically.
If no route matches, it can show a fallback like a 404 page.
Use <RouterView /> inside your template to display routed components.

Full Transcript

RouterView is a special Vue component that shows the component for the current route. When the app starts, RouterView finds the route and renders the matching component. If the user clicks a link to change the route, RouterView updates to show the new component. If the route does not exist, RouterView shows a fallback component like a 404 page. This process repeats every time the route changes, keeping the displayed content in sync with the URL.