grindmaster

Hy, I'am fresh in web Developement and I'am wondering why sending data via forms opens the php-file automaticly instead of working with the data in the backround. <table class="table table-bordered"> <form action="php/interface.php" method="post"> <thead> <tr> <th><input type="submit" ></th> <th><p>Serie: <input type="text" name="serie" /></p></th> <th><p>Korn: <input type="text" name="korn" /></p></th> </tr> </thead> </form> </table> On the php-site I then want to take the user input, built a query -> save the result in a php-var - konvert it to Json and then do something in Javascript to display the result in the Frontend. The Query and the conversion etc. works, but my Problem is, that pressing the submit button opens the php-file.