Build a multi-page web app where users can navigate between sections like Home, About, and Contact without reloading the page.
Create an admin dashboard with nested navigation, like Settings > Account > Security, where each section loads its own content.
Add access control to your app so unauthenticated users are redirected away from protected pages like /admin or /profile.
vue-router is the official routing library for Vue 2, the JavaScript framework for building web interfaces. Routing, in web development terms, means handling navigation, deciding which page or component to display when a user clicks a link or types a URL. Without a router, a web app would only show one screen and couldn't navigate between sections without doing a full page reload. vue-router enables Single Page Applications (SPAs), where the browser loads the app once and then swaps out content dynamically as the user navigates, giving a fast, app-like experience. It supports nested routes (a page within a page, like a settings panel with sub-tabs), route parameters (dynamic segments in URLs like /user/123), and query strings. It also provides animated transitions between views using Vue's built-in transition system, and navigation guards for controlling access (like blocking unauthenticated users from certain pages). You would use this whenever you're building a Vue 2 web application that has multiple distinct screens or sections that users can navigate between. It handles both HTML5 history mode (clean URLs like /about) and hash mode (URLs like /#/about) with automatic fallback for older browsers. It's written in JavaScript and is maintained by the Vue.js team.
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