VueJS使用laravel获取url参数

Question

I have a page (example.com/administration/product/add/1)

I want to get the last url parameter (1) with vue js.

My laravel route:

Route::get('product/add/{company?}', function ()
{
    return view('page.administration.admin.product.create');
})->name('Admin.Dashboard.Product.Create');

My attempt: this.$route.params.company but i get an error that $route is not defined.

Any tips?