An exemplary eyeball of toy includes a transparent chamber, a plurality of electrified balls rotatably received in the chamber and a plurality of annular film electrodes concentrically arranged on the chamber. Each of the electrified balls has a first hemisphere and a second hemisphere. The first hemisphere and the second hemisphere are in different colors. The first hemisphere and the second hemisphere carry opposite electrical charges. The annular film electrodes are substantially arranged on a common plane and face the electrified balls.