get_owner()

Returns a client-side object of type Telerik.Web.UI.GridTableView which represents the parent of the current item.

<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server" AllowPaging="True"
    OnNeedDataSource="RadGrid1_NeedDataSource">
    <ClientSettings>
        <ClientEvents OnRowCreated="rowCreated" />
    </ClientSettings>
    <MasterTableView DataKeyNames="OrderID">
    </MasterTableView>
</telerik:RadGrid>

function rowCreated(sender, args) {
    var item = args.get_item();
    var tableView = item.get_owner();

    if (tableView.get_id() == args.get_tableView().get_id()) {
        alert("The table view can be accessed in two ways.");
    }
}