Send text to remote server using an Iframe

Here is an example to post text to a remote server. And you can print javascript in the remote server if you want to change the page you have the Iframe on to say something like success. Or a popup saying it finished. On the remote server you can print this to make a popup: <script> parent.document.getElementById('postmessage').style.display='block'; parent.alert('Successfully posted');</script> On the webpage you want to send information from make a form and Iframe like this.

<span id="postmessage" style="display:none">Success Message</span>
<form action="http://www.remoteserver.com/upload_test.php" method="post" target="post_to_iframe">
  <input type="hidden" value="the text to send to remote server" />
  <input type="submit" value="Submit" />
</form>

<!-- When you submit the form it will submit to this iFrame without refreshing the page and it will make the popup and display the message. -->
<iframe name="post_to_iframe" style="width: 600px; height: 500px;"></iframe>