Function setPlacement

docs/Tests.tsx:52–58

({
    currentTarget,
  })

  };

  const setPlacement: ChangeEventHandler<HTMLSelectElement> = ({
    currentTarget,
  }) => {
    const newPortalPlacement =
      currentTarget && (currentTarget.value as MenuPlacement);
    setPortalPlacement(newPortalPlacement);
  };

  const menuPortalTarget = !isFixed ? document.body : null;