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JavaScript Add/remove element on button click, based on checked checkboxes

I am creating messaging process but I encounter problem with marking messages as important/unimportant.

1634998261018.png

What I am trying to achieve is, if I mark those messages as important, I will append that icon to specific element. And if I mark it again as unimportant, the icon will be removed.
However, something weird is happening to adding/removing that icon, which I couldn't figure out how to solve. So, just like the read/unread, I'd like to toggle between important/unimportant.

PHP:
<tr class="<?php echo $isRead; ?>" data-id="<?php echo $key['mailID']; ?>">
    <td class="check-mail">
    <input type="checkbox" class="i-checks mail" autocomplete="off">
    </td>
    <td class="mail-contact"><a href="mail_detail.php?id=<?php echo $key['mailID']; ?>"><?php echo ucwords(strtolower($guiClass->e($key['name']))); ?></span></a></td>
    <td class="mail-subject"><a href="mail_detail.php?id=<?php echo $key['mailID']; ?>"><?php echo mb_strimwidth(ucfirst($guiClass->e($key['subject'])), 0, 60, "..."); ?></a></td>
    <td class="text-right mail-date"><?php echo time_passed(date(strtotime($key['created_at']))); ?></td>
</tr>

JavaScript:
$("#mark-as-important").click(function () {
    var span = $(
      "<span class='float-right important'><i class='fa fa-certificate'></i></span>"
    );
    $(".mail:checked")
      .closest("tr")
      .find(".mail-contact")
      .find("a")
      .each(function () {
        if ($(this).find(".important").length) {
          $(this).children(".important").remove();
        } else {
          $(this).append(span);
        }
      });
  });
 
Very similar question to my question on "how to add and remove fieldsets from a form"... I am also using radio check options, but NOT using PHP.. You posted on a Javascript forum.... not sure if there is a PHP forum (first day in here)

I am only working it on html and javascript.

If it helps you.. this is a simple script from w3schools on how to create an element.


This other one is a YouTube video on how to hide elements onclick from a checkbox




video title:

Use JavaScript to Hide or Show a Portion of a Form​

 
Last edited by a moderator:

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