Get Current User Name using Jquery Onload in sharepoint

1.Down load two files from Jquery
a.jquery-1.8.2.min.js
b.jquery-.SPService-0.7.2.min.js
2.Write the following code after the following place holder in new.aspx of sharepoint list

<asp:Content ContentPlaceHolderId="PlaceHolderMain" runat="server">

<script  src="../../SiteAssets/js/jquery-1.8.2.min.js" type="text/javascript"></script>

<script src="../../SiteAssets/js/jquery.SPServices-0.7.2.min.js" type="text/javascript" ></script>

<script type="text/javascript">

$(document).ready(function(){

  var thisUserAccount = $().SPServices.SPGetCurrentUser({ fieldName: "Title", debug: false });

  $("input[title='NotesAuthor']").val(thisUserAccount );

}

);

</script>