How to accept variable in laravel controller?

Question

Laravel

How to pass a variable to the controller via js in laravel and accept it there?
In Codeigniter I did this:

function add(obj) {
        var id = obj.id;
        $.ajax({
            url: "<?php echo base_url(); ?>" + "index.php/main/add_to_card",
            type: "POST",
            data: {"id": id},
            cache: false,
            success: function (response) {
                window.location.reload();
            }
        });
    }

In controller I accept like this: How is it done in laravel?
$id= trim($_POST['id']);

Answer 1

function add(obj) {
        var id = obj.id;
        $.ajax({
            url:  document.location.origin+ "/main/add_to_card",
            type: "POST",
            data: {"id": id},
            cache: false,
            success: function (response) {
                window.location.reload();
            }
        });
    }

And in the controller
$id = request()->input('id')

Answer 2

Replace the url from the example with A. Further "how", "what" and "where" depend on your tasks and needs, and are located on the pages of the documentation you hate so much with blood and love: https://laravel.com/docs/5.7 /blade