gistfile1.js

$.ajax({
      crossDomain: true,
			type: "GET",
			url: "https://ws.elfarosrl.net:3000/categories",
			contentType: "application/json; charset=utf-8",
			data:{
				access_token: "a7632c8200bc27b95ed11c999ff20c944dfbb0a8",
				last_imported_at: -1
			}
		}).done(function(data, textStatus, jqXHR){
			$('#hisa').css('background-color', 'green');
			$('#hisa p').text(data);
		}).fail(function(jqXHR, textStatus, errorThrown){
			$('#hisa').css('background-color', 'red');
			$('#hisa p').text('CORS ha fallado...'+textStatus+'...');
			console.log('cors error: '+errorThrown);
		});

This only works if I first navigate to the page and then accept the certificate manually