asked on

javascript to put IP into text field not working

javascript error
Not sure if I'm just being silly, but can't seem to get this script to work

function GetIP()
{
var strIP
strIP = Request.ServerVariables("HTTP_X_FORWARDED_FOR");
If strIP = "" Then strIP = Request.ServerVariables("REMOTE_ADDR");
IP = strIP;
document.form1.User_IP.value = IP;

}

Ryan Chong

you can't get IP address via client side javascript. this got to be done at server side instead.

Chinmay Patel

Hi Mark,

The code you have written looks like classic ASP 3.0 code. It executes on server and then sets IP in a form. If you post the entire code I will be able to tell you why it does not populate on the form.

Regards,
Chinmay.

David Favor

Accessing headers from Javascript is possible + likely more complex than you imagine.

How you do this relates to many factors.

https://stackoverflow.com/questions/220231/accessing-the-web-pages-http-headers-in-javascript provides a good overview of various methods of header access.

Mark Drelinger

ASKER

I might have been overthinking it since I only needed internal IP address.
This seemed to work
<input name="User_IP" type="hidden" id="User_IP" value="<%=Request.ServerVariables("REMOTE_ADDR")%>">
Is this a bad practice ?

Ryan Chong

Is this a bad practice ?

any particular reason you want to show the IP address in your page?

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Mark Drelinger

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Mark Drelinger

ASKER

Thanks to all - I split the points because everyone was helpful...