Unity Button Code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class ButtonCode : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
{
   public UnityEngine.UI.Text thisText;

    public void OnPointerEnter(PointerEventData eventData)
    {
        thisText.color = Color.yellow;
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        thisText.color = Color.white;
    }
}