previous page hidden field value in jquery or from asp.net code to jquery

Put This in your head tag

<script type="text/javascript">
        function callit() {

            var ele = document.getElementById("hiddenfield");
            var x = parseInt(ele.value) + 1;
            document.getElementById("hiddenfield").value = x;
            $("#<%=Label1.ClientID %>").text(x);
        }
    </script>

put follwoing in your body tag

<input type="hidden" id="hiddenfield" value="0"/>
       <asp:Label ID="Label1" runat="server" Text="hello"></asp:Label>
   <div id="MyDiv">This is my div</div>
    <input id="Button2" type="button" onclick="callit()" value="button"  />

You cannot get the previous page hidden value .

if in case it is a popup windows, you can get through document.opener.getelementbyid......

u can use the following to get the values

1) Query string to get the values

2) Session Variables

3) Cookies

have a look at this link for more info on State management

State Management in ASP.NET - Introduction[^]