javascript - Submit button not sending anything -

i'm trying use custom-built submit button made website design i'm using , don't know how make submit button send post request forms on page. far thing button make "thank you!" show on webpage. here code:

//signup form.     (function() {          // vars.             var $form = document.queryselectorall('#signup-form')[0],                 $submit = document.queryselectorall('#signup-form input[type="submit"]')[0],                 $message;          // bail if addeventlistener isn't supported.             if (!('addeventlistener' in $form))                 return;          // message.             $message = document.createelement('span');                 $message.classlist.add('message');                 $form.appendchild($message);              $message._show = function(type, text) {                  $message.innerhtml = text;                 $message.classlist.add(type);                 $message.classlist.add('visible');                  window.settimeout(function() {                     $message._hide();                 }, 3000);              };              $message._hide = function() {                 $message.classlist.remove('visible');             };          // events.         // note: if you're *not* using ajax, rid of event listener.             $form.addeventlistener('submit', function(event) {                  event.stoppropagation();                 event.preventdefault();                  // hide message.                     $message._hide();                  // disable submit.                     $submit.disabled = true;                  // process form.                 // note: doesn't yet (other report "thank you"),                 // there's enough here piece working ajax submission call does.                     window.settimeout(function() {                          // reset form.                             $form.reset();                          // enable submit.                             $submit.disabled = false;                          // show message.                             $message._show('success', 'thank you!');                             //$message._show('failure', 'something went wrong. please try again.');                      }, 750);              }); 

you need remove

    event.preventdefault();  

for more info check http://api.jquery.com/event.preventdefault/