Close the popup on scroll in ASP.NET MVC DropDownList control

@Html.EJS().DropDownList("games").Placeholder("Select a game").PopupHeight("200px").DataSource((IEnumerable<object>)ViewBag.data).Render()

<script>
    window.onscroll = () => {
        var dropObj = document.getElementById("games"); //to get dropdown list object
        dropObj.ej2_instances[0].hidePopup(); // hide the popup using hidePopup method
    }
</script>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using WebApplication1.Models;

namespace WebApplication1.Controllers
{
    public class DropDownListController : Controller
    {
        public IActionResult closepopup()
        {
            ViewBag.data = new string[] { "American Football", "Badminton", "Basketball", "Cricket", "Football", "Golf", "Hockey", "Rugby", "Snooker", "Tennis" };
            return View();
        }
    }
}