Find TextBoxes value inside UserControl using JavaScript

i m using webusercontrol and this webuser control is placed in master page. not bale to find value of textbox in webusercontrol using javascript.

<script type="text/javascript">
    function clientchat() {
        $(function () {
            var m = document.getElementById("<%=txtmanagerid.ClientID%>").value;
            var n = document.getElementById("<%=txtclientid.ClientID%>").value;
         }

my webuser control id is chatting