Vue Router-Link: Purpose & How It Works

The router-link in Vue is a component used to create navigation links. It appears as a clickable link that, when clicked by the user, triggers a route transition.

The functions of router-link include the following aspects:

1. Routing redirection: By setting the ‘to’ attribute, router-link will generate a link with a path included. When a user clicks on this link, Vue Router will redirect the route based on the ‘to’ value, displaying the corresponding component.
2. Dynamic routing: router-link can accept an object as the value for the to attribute, allowing for dynamically generating links as needed. For example, passing an object containing parameters can generate dynamic routing links with those parameters.
3. Router activation style: When the router-link matches the current route, it will automatically add a default class, which can be customized by setting the active-class attribute.
4. Nested routes: router-link can be nested to create a nested navigation structure. In nested routes, each router-link corresponds to a child route.
5. Programmatic navigation: In addition to user clicks, router-link can also perform route navigation programmatically. It can be achieved through the methods router.push or router.replace.

In general, router-link is a very convenient component that allows for quickly creating navigation links and seamlessly integrating with Vue Router to achieve functions like routing and dynamic routes.