access viewstate using javascript

What is View state ?
It is important and useful client side state management mechanism. It can store the page value at the time of post back. ASP.NET provides the ViewState property is built-in structure which automatically storing data between multiple requests for the same page.

Defining View State:

ViewState["Var"]=Count;

Retrieving information from View State

string Test=ViewState["TestVal"];

But to accessing the viewstate from client side code, access view state from javascript.

@Code snippet to access View State

<script language="javascript" type="text/javascript">

        var GetValue = document.getElementById("GetValue");

        alert(GetValue1);

    </script>

@Code in server side

ViewState["value"] = "Test View State";

            Page.ClientScript.RegisterHiddenField("GetValue", Convert.ToString(ViewState["value"]));