php - Submitting form data with javascript (No page reload) -


i've got wall/social system (much facebook) there's statuses, want able like, dislike , comment on status without page reloading, form below how complete this?

if(empty($_get['action'])){          postupdate();         if(isset($_post['scomment'])){         $dbc = mysqli_connect(db_host, db_user, db_password, db_name);         $comment = mysqli_real_escape_string($dbc, trim($_post['comment']));         $sid = mysqli_real_escape_string($dbc, trim($_post['sid']));         $dbc = mysqli_connect(db_host, db_user, db_password, db_name);         $query = "insert comments (`user`, `post`, `time`, `content`) values ('".$_session['user_id']."', '$sid', now(), '$comment')";         $data = mysqli_query($dbc, $query);         }         $dbc = mysqli_connect(db_host, db_user, db_password, db_name);         $query = "select posts.*, user.*  posts join user on user.user_id = posts.user_id join friends on friends.user = ".$userinfo['id']." , friends.with = posts.user_id order posts.post_id desc";         $data = mysqli_query($dbc, $query);         while($row = mysqli_fetch_array($data)){             echo'<div class="shadowbar">                     <div class="postedby"><b> posted <a href="index.php?action=user&u='.$row['user_id'].'" class="btn-link">'. $row['firstname'] .' '. $row['lastname'] .'</a> on '. date('m j y g:i a', strtotime($row['postdate'])) .'</b></div>';                     $parsed = $parser->parse($row['post']);                 echo '<pre>'.$parsed.'</pre>                 <hr>                 <form method="post" action="index.php" class="commentform">                     <fieldset>                         <div class="input-group">                             <textarea cols="150" rows="1" style="resize: none;" placeholder="comment..." class="form-control" type="text" id="commentbox" name="comment"></textarea>                         </div>                         <input type="hidden" value="'.$row['post_id'].'" name="sid">                     </fieldset>                     <input class="link lbutton" type="submit" value="add comment" name="scomment" />                 </form>                          </div>';             }             echo '</div>';             }

the form can changed fit code. i'm assuming it's javascript need use.

here's code started.

first of all, add id or class in order identify form(s):

<form method="post" action="index.php?action=comment" class='commentform'>

since tagged jquery, shall use that:

$(document).on('submit', '.commentform', function(e) {     e.preventdefault(); // prevents default page reload after form submission      $.ajax({         type: $(this).prop('method'),         url: $(this).prop('action'),         data: $(this).serialize()     }).done(function() {         // after submits         alert('thanks comment!');     }).fail(function() {         // there error         alert('an error occurred');     }); });

you can read more jquery.ajax in jquery documentation.


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