Data Binding

<div id="contextmenutarget">Right click/Touch hold to open the ContextMenu </div>
@Html.EJS().ContextMenu("contextmenu").Target("#contextmenutarget").Items("items").BeforeItemRender("beforeItemRender").Render()

<script>
    function items() {
        var data = [
        { id: 1, parentId: null, text: 'View' },
        { id: 2, parentId: null, text: 'Sort by' },
        { id: 3, parentId: null, text: '' },
        { id: 4, parentId: null, text: 'New' },
        { id: 5, parentId: null, text: '' },
        { id: 6, parentId: null, text: 'Display Settings' },
        { id: 7, parentId: null, text: 'Personalize' },
        //first level child
        { id: 8, parentId: 1, text: 'Large Icons' },
        { id: 9, parentId: 1, text: 'Medium Icons' },
        { id: 10, parentId: 1, text: 'Small Icons' },
        { id: 11, parentId: 2, text: 'Name' },
        { id: 12, parentId: 2, text: 'Size' },
        { id: 13, parentId: 4, text: 'Folder' },
        { id: 14, parentId: 4, text: 'Shortcut' },
        { id: 15, parentId: 4, text: '' },
        { id: 16, parentId: 4, text: 'Contact' }];

        var record;
        var menuItems = [];
        for (var i = 0; i < data.length; i++) {
            record = data[i];
            if (record.parentId) {
                if (!menuItems[record.parentId - 1].items) {
                    menuItems[record.parentId - 1].items = []
                }
                menuItems[record.parentId - 1].items.push({ text: record.text });
            } else {
                menuItems.push({ text: record.text });
            }
        }
    }

    function beforeItemRender(args) {
        if (!args.item.text) {
            args.element.classList.add('e-separator');
       }
    }

</script>

<style>

button {
  margin: 20px 0 0 5px;
}

#target {
  border: 1px dashed;
  height: 150px;
  padding: 10px;
  position: relative;
  text-align: justify;
  color: gray;
  user-select: none;
}

</style>

public IActionResult Index()
        {
            List<object> menuItems = new List<object>();
            menuItems.Add(new
            { 
                id=1,
                text = "View"
            });
            menuItems.Add(new
            {
                id = 2,
                text = "Sort By"
            });
            menuItems.Add(new
            {
                id = 5,
                text = ""
            });
            menuItems.Add(new
            {
                id = 3,
                text = "New"
            });
            menuItems.Add(new
            {
                id = 4,
                text = "Ascending",
                parentId = 2
            });
            ViewBag.menuItems = menuItems;
            return View();
        }