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One of the easiest solution is<br />
1. Disable the button once user clicks. This will submit the form only once.<br />
<br />
<br />
for example:<br />
<br />
&lt;cfform name=&quot;f1&quot; method=&quot;post&quot;&gt;<br />
&lt;cfinput type=&quot;text&quot; name=&quot;ccn&quot;/&gt;<br />
&lt;cfinput type=&quot;submit&quot; &nbsp;value=&quot;Submit&quot; name=&quot;sbt&quot; onclick=&quot;this.disabled=tru<wbr />e;&quot;&gt;<br />
&lt;cfinput type=&quot;reset&quot; &nbsp; value=&quot;Reset&quot; name=&quot;reset&quot; &gt;<br />
&lt;/cfform&gt;
</div>


One of the easiest solution is
1. Disable the button once user clicks. This will submit the form only once.


for example:

<cfform name="f1" method="post">
<cfinput type="text" name="ccn"/>
<cfinput type="submit"  value="Submit" name="sbt" onclick="this.disabled=true;">
<cfinput type="reset"   value="Reset" name="reset" >
</cfform>

<div>
<div class="content wysiwyg-content">
I want to prevent the credit card form from being submitted twice. Maybe display a progress bar and hide the form so that it doesn't get submitted twice.
</div>
</div>


I want to prevent the credit card form from being submitted twice. Maybe display a progress bar and hide the form so that it doesn't get submitted twice.

Coldfusion 9  Progress Bar

ColdFusion is a server-side rapid application development platform originally created by Allaire and now sold by Adobe, implementing the dynamic general purpose CFML programming language. The term ColdFusion is sometimes colloquially used to refer to the CFML language (Cold Fusion Markup Language), but can also include discussions of the server software implementation. ColdFusion runs using a customised version of Apache Tomcat. Earlier versions are bundled with JRun.

ColdFusion Language

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.

JavaScript

Asynchronous JavaScript and XML (AJAX) is a group of interrelated Web development techniques used on the client-side to create asynchronous Web applications. With AJAX, web applications can send data to and retrieve from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. HTML and CSS can be used in combination to mark up and style information. The Document Object Model (DOM) is accessed with JavaScript to dynamically display and allow interaction with the information presented.