like below i have try but not work
<script type="text/javascript">
        $(function () {
            var editor = $get("<%=Editor1.ClientID%>").control;
            var content = editor.get_content();
            $get("<%=Literal1.ClientID%>").Text = content;
        });
</script>
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    </asp:ToolkitScriptManager>
<cc1:Editor ID="Editor1" runat="server" />
    <asp:Button ID="Button1" runat="server" Text="Button" />
     <asp:Literal ID="Literal1" runat="server"></asp:Literal>