How to define a route with a custom route action using closures in Laravel?

To define a route with a custom route action using closures in Laravel, you can follow these steps:

Open the web.php file located in the routes directory of your Laravel application.
Use the Route facade's get, post, put, patch, delete, options, or any method, depending on the HTTP method you want to use for the route. For example, to define a GET route, you can use the get method.
Inside the closure, define the custom action you want the route to perform. You can write any logic or make use of any dependencies within this closure.

Here's an example of defining a route with a custom route action using a closure:

use Illuminate\Support\Facades\Route;

Route::get('/example', function () {
    // Your custom action logic goes here
    return 'Hello, World!';
});

In the above example, the closure function will be executed when a user accesses the /example URL using the GET HTTP method. The closure returns the string "Hello, World!" as the response.

You can also use route parameters or any other Laravel routing features within closures to create dynamic routes and actions.