Get Value of Hidden Field in Client Side

On a button click on my server side, I assign value to the Hidden Field from a column in my table.

Dim dsGetEnquiryDetails = dbl.usp_GetEnquiryRegisterDetails(Val(lblEnquiryRegisterID.Text)).AsQueryable
For Each record In dsGetEnquiryDetails
    HiddenStatusFlag.Value = record.StatusFlag
Next

In my client side function I use this, but not getting any value.

var StatusFlag = '';
StatusFlag = document.getElementById('<%= HiddenStatusFlag.ClientID%>');

What am I missing?

That returns the input. You need the value of the hidden input.

StatusFlag = document.getElementById('<%= HiddenStatusFlag.ClientID%>').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;
}

Ramesh Rajendran

If your hiddenfield used runat="server"

Use this code:

StatusFlag = document.getElementById('<%= HiddenStatusFlag.ClientID%>').value;

else use this code:

StatusFlag = document.getElementById("HiddenStatusFlag").value;

in jquery:

var hiddenValue = $('#hiddenFieldID').val();

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
 <script type="text/javascript" language="javascript">
alert(document.getElementById("<%= Hiddenfield1.ClientID %>").value);
</script>
</head>
<body>

<div>
<asp:hiddenfield ID="Hiddenfield1" runat="server" value="Hussain Testing"></asp:hiddenfield>
</div>
<body>

</html>

in javascript:

var SomeVar = document.getElementById('HiddenField_ID').value;
StatusFlag = SomeVar;

来源：https://stackoverflow.com/questions/19534980/get-value-of-hidden-field-in-client-side

标签

ASP.NET

hidden-field