WordPess - Add Custom Ajax Endpoints

<?php

// Action for unauthorized users
add_action('wp_ajax_nopriv_my_action','my_action');
// Action for authorized users
add_action('wp_ajax_my_action', 'my_action');

public function my_action() {
	echo "test";
}

?>

<script>
  	jQuery.ajax({
	  type: "GET",
	  dataType: "JSON",
	  url: '/wp-admin/admin-ajax.php',
	  data: {
		  action: "my_action",
	  },
  
	  error: function(response, error) {
		  console.log("wrong");
	  },
  
	  success : function(response) {
		  if(response.type === "success") {
			  console.log("Success");
		  }
	  }
  	});
</script>