wip adding attributes, works with filter wp-script-attributes

plugins/fipfcard_plugin/php/menu/example_menu.php

@@ -16,4 +16,28 @@ function fipfcard_plugin_content() {
 	));
 }
 
+
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ajax
+- https://stackoverflow.com/questions/43557755/how-to-call-ajax-in-wordpress
+- in `add_action( 'wp_ajax_get_data', 'my_ajax_handler' );`
+  the 'wp_ajax_get_data' is a hooks formated as 'wp_ajax_{$action}'
+	the `$action` param is passed in the data object of the ajax call
+- to access the content of the data object properties of the ajax call :
+  use $_POST['property_name']
+*/
+function fipfcard_ajax_handler()
+{
+	return new WP_REST_Response('hello', 200);
+}
+function fipfcard_menu_endpoint()
+{
+	register_rest_route('plgntls', '/get_data', array(
+		'methods' => 'POST',
+		'callback' => 'fipfcard_ajax_handler',
+	));
+};
+add_action('rest_api_init', 'fipfcard_menu_endpoint');
+
 ?>