Register java script variable from server side

protected void Page_Load(object sender, EventArgs e)

{

Int16 userId = 1;

Page.ClientScript.RegisterStartupScript(this.GetType(), "UserId", "<script> var UserId=" + userId + "</script>");

}

In the above code, variable UserId is initialized by value 1 and we can access this value in client side.

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

$(document).ready(function () {

GetServerSideValue();

});

function GetServerSideValue() {

alert(UserId);

}

</script>