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Resource

Multiple Form Posts

Categories...
Language
No Script, VBScript
Product
IE3, IE4, IIS, NS3, NS4
Task
Form Enhancement
Technology
Intrinsic Controls, Server Scripting

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Developer's Paradise : Inside Technique :
Multiple Form Posts
Submission by SiteExperts Staff

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Multiple Form Posts
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Short Description
A technique for preventing forms from being submitted multiple times.

Long Description
Allowing the same form to submit itself multiple times can create real problems for your web-site. For example, orders can be submitted multiple times and discussion groups can end up with the same message over and over agian. In this article we explore a solution we will be deploying on our site.

Author: Scott Isaacs
Submission URL: http://www.SiteExperts.com/tips/backend/ts04/page1.asp
Submission Date: Dec 27,1998
Last Update: Dec 27,1998

Discussion and Rate this Resource
Overall Rating: 3.5

Lee on Jan 12, 1999 at 3:49:19 AM Rating: 1
Sessions in ASP and NT is not a good idea, since it can crash your computer if traffic is high. It can low memory, decrease performance, etc.

We had experienced with heavy traffic and the machine simply stops the "ASP service". The only solution is booting it.

Here is my solution to prevent multiple form posts. It's simple and works with all browsers.
Writen in Javascript. You can change as you can.

<SCRIPT language="JavaScript">
var sent=false;
function confirm(){
node1=document.formname;
name=node1.name.value;
phone=node1.phone.value;
if (sent){
alert("Sorry, but you had submited!")
// or could be:
// location="http://www.yourcompany.com/already.htm"
return;
}
node1.submit();
sent=true;
}
}
</SCRIPT>

<TITLE>Demo</TITLE>

Please Fill the form:
<P>

<FORM name="formname" method=post
action="http://www.yourcompany.com/yourcgi"
onSubmit="confirm()" target="newpage">
Name: <INPUT type=text name="name" value="" size=30><BR>
Phone: <INPUT type=text name="phone" value="" size=20><P>
<INPUT type=submit value=" OK ">
</FORM>
</HTML>

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