function validateRequiredNumeric(Control, msgInfo) {
    var ControlId = $('#' + Control);
    var msgInfoId = $('#' + msgInfo);
    //testing regular expression
    var a = ControlId.val();
    var filter = /[^d]/;
    alert(a.length);
    if (a.length != 0) {
        if (filter.test(a)) {
            msgInfoId.text('');
            ControlId.css({ 'border': '1px solid green' });
            return true;
        } else {
            //msgInfoId.css({ 'color': 'red', 'font-size': '12px', 'font-style': 'italic' });
            msgInfoId.text("Numeric Onlydd fdf dfd");
            ControlId.css({ 'border': '1px solid red' });
            return false;
        }
    }
    else {
        //msgInfoId.css({ 'color': 'red', 'font-size': '12px', 'font-style': 'italic' });
        msgInfoId.text("You can't leave this empty.");
        ControlId.css({ 'border': '1px solid red' });
        return false;
    }

}

var filter = /^d*$/;

var a = Number($.trim(controlID));  //or parseInt($.trim(controlID))
    if (!isNaN(a)) {
        //a is valid number
    } else {
        //a is not a number or is empty
    }