Get Value of Hidden Field in Client Side
That returns the input. You need the value of the hidden input.
StatusFlag = document.getElementById('<%= HiddenStatusFlag.ClientID%>').value;
If your hiddenfield used runat="server"
Use this code:
StatusFlag = document.getElementById('<%= HiddenStatusFlag.ClientID%>').value; else use this code:
StatusFlag = document.getElementById("HiddenStatusFlag").value;
Assuming that it's not null you don't use the hiddenfield's value proprty:
var statusFlag = '';var hiddenStatusFlag = document.getElementById('<%= HiddenStatusFlag.ClientID%>');if(hiddenStatusFlag != null){ statusFlag = hiddenStatusFlag.value;}