Validate entered Year with current Year using JavaScript

Hi kavithav,

Please take reference the below code and correct your code.

HTML

Date:
<asp:TextBox ID="txtDate" runat="server" onchange="ValidateYear(this);"></asp:TextBox>
<asp:Label ID="lblMessage" runat="server" ForeColor="Red"></asp:Label>
<script type="text/javascript" language="javascript">
    function ValidateYear(input) {
        document.getElementById('lblMessage').innerHTML = "";
        var inputYear = input.value
        var currentYear = new Date();
        if (inputYear == "") {
            document.getElementById('lblMessage').innerHTML = "Enter year of passing";
        }
        else {
            if (inputYear > currentYear.getFullYear()) {
                input.value = '';
                input.focus();
                document.getElementById('lblMessage').innerHTML = "Enter valid year of passing";
            }
            else if (inputYear < currentYear.getFullYear() - 10) {
                input.value = '';
                input.focus();
                document.getElementById('lblMessage').innerHTML = "Enter valid past 10 year";
            }
        }
    }
</script>

Screenshot