Error BCE0044

So Im following the Unity 3D Script Reference:

// Kills the game object Destroy (gameObject); // Removes this script instance from the game object Destroy (this);

 // Removes the rigidbody from the game object
 Destroy (rigidbody);
 
 // Kills the game object in 5 seconds after loading the object
 Destroy (gameObject, 5);

 // When the user presses Ctrl, it will remove the script 
 // named FooScript from the game object
 function Update () {
     if (Input.GetButton ("Fire1") && GetComponent new FooScript  ()
         Destroy GetComponent new FooScript()
 }

Then I get Error BCE0044 What should I do to fix this?