How to make a new window open after submitting a form to show the results of the submission

4. How to open a new window after submitting the form to display the results of the submission.

If you have a mailing list service on your site, each time a visitor subscribes and presses the Subscribe button. Because the mailing list requires subscription determination, which is provided by third parties, the subscription determination page connects to the service provider's page. This sometimes shines as a visitor leaves the site. You can set the following code so that when a visitor clicks the subscribe button, a new window opens to show the subscription OK.

<form action=http://www.popchina.com/cgi-popchina/mailist.pl method=post target= "_blank" >
Which is included in your code: target= "_blank"