this.$router.push

This code is used in Vue.js to navigate to a new route programmatically.

The `this` keyword refers to the current Vue instance. The `$router` property is an instance of the Vue Router, which manages the application's routing. The `push()` method is used to navigate to a new route, and it accepts a single argument that specifies the target route.

For example, if you wanted to navigate to the route with the path `/about`, you would use the following code:

this.$router.push('/about');

This would change the URL to `http://yourdomain.com/about` and render the component associated with the `/about` route.